CASCACascade Atlas

Evidence dossier

CVE-2020-3118

Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability

Exploited in the wild (CISA KEV since Nov 3, 2021). NVD reports CVSS 3.1 8.8. EPSS estimates 11.7% exploit likelihood as of Aug 27, 2026.

71.5–73.0Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a reload on an affected device. The vulnerability is due to improper validation of string input from certain fields in Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges on an affected device. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).

State
PUBLISHED
Published
Feb 5, 2020
Updated
Oct 21, 2025
Evidence coverage
98%

Evidence chronology

What was known when

Download this view's receipt →
  1. Source dateSource date omittedFirst observed by CASCA
    CISA-ADP

    Record text: CISA ADP Vulnrichment

    Inspect raw assertion
    Field
    container
    Value
    CISA ADP Vulnrichment
    Original evidence ↗
  2. Source dateSource date omittedFirst observed by CASCA
    cisco

    Record text: Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability

    Inspect raw assertion
    Field
    container
    Value
    Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability
    Original evidence ↗
  3. Source dateSource date omittedFirst observed by CASCA
    CVE Program

    Record text: CVE Program Container

    Inspect raw assertion
    Field
    container
    Value
    CVE Program Container
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Cisco IOS XR Software Discovery Protocol Format String Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Cisco IOS XR Software Discovery Protocol Format String Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 11.68% probability · 95.74th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.116850000000; percentile 0.957420000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Nov 3, 2021 · first observed Jul 19, 2026

Exploit likelihood11.68%

FIRST EPSS · score date Aug 27, 2026 · 95.7th percentile · first observed Aug 27, 2026

SeverityCVSS 8.8

NVD · CVSS 3.1 · first observed Jul 19, 2026 · same-version scores align in this snapshot

Evidence detail

Source limits and decisions

Why each evidence state has this value

casca-unknown-reasons-v1
Exploitation statusEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Severity assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Aug 27, 2026
Resolution
None
Affected productsSource-reported scope

The cited source assertion is retained while canonical product linkage remains open.

Revision
casca-factor-d-obligations-v1
Cutoff
Aug 27, 2026
Resolution
Resolve identity

Source comparison

Who said what

CISA-ADPIndependent enrichment
Record text

CISA ADP Vulnrichment

Inspect raw assertion
Field
container
Value
CISA ADP Vulnrichment
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
ciscoOriginal assertion
Record text

Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability

Inspect raw assertion
Field
container
Value
Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CVE ProgramDerivative copy
Record text

CVE Program Container

Inspect raw assertion
Field
container
Value
CVE Program Container
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Cisco IOS XR Software Discovery Protocol Format String Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Cisco IOS XR Software Discovery Protocol Format String Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

11.68% probability · 95.74th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.116850000000; percentile 0.957420000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
53Underlying assertions
37Canonical products
7Target assertions
46Constraint assertions

Grouped from 11 configuration nodes in this exact snapshot. Visual grouping is navigational; asset exposure and root cause require cited evidence.

Identity source boundaries
  • Cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z27d65b0f-b718-4b4f-bb79-c47c68d09dfa
  • Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z955dae73-7302-438b-aee1-058d7cc5d48e

38 scope groups

cisco · source assertedCiscoCisco IOS XR SoftwareDirect source scope
Affected: unspecified to before 6.6.3 (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "unspecified", "lessThan": "6.6.3", "versionType": "custom"}]
NVD CPE · HARDWAREciscoasr_9000Environmental constraint · 1 assertions
Version not applicableCanonical identity product-8f847156d3d3f5075a69524d05cf4a9f7d90e5c51eea7784a4105a4dedd6c231Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:asr_9000:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    3fef8271-315f-4756-931f-015f790be693
NVD CPE · HARDWAREciscoasr_9000vEnvironmental constraint · 2 assertions
Version not applicableCanonical identity product-e39a550d575124242218d66519a47698c3455c65f5fc6c1a4ac89a972b9fd5c7Linked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:h:cisco:asr_9000v:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    71bd158e-71d8-4dca-8c09-f8ab7ef0ebdd
  2. cpe:2.3:h:cisco:asr_9000v:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    71bd158e-71d8-4dca-8c09-f8ab7ef0ebdd
NVD CPE · HARDWAREciscoasr_9001Environmental constraint · 2 assertions
Version not applicableCanonical identity product-cbb6a64cd76f93814f9ffbd38fad8ca11ba8e81e213e4e169a5ce30f53509e93Linked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    324c97e6-1810-404f-9f45-6240f99ff039
  2. cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    324c97e6-1810-404f-9f45-6240f99ff039
NVD CPE · HARDWAREciscoasr_9006Environmental constraint · 2 assertions
Version not applicableCanonical identity product-e34ba24d6024231202802383edcf903e9a0f790d71683e4a0b3ce73f75b2d9c0Linked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    57eb55bb-41b7-40a1-b6f5-142fe8ab4c16
  2. cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    57eb55bb-41b7-40a1-b6f5-142fe8ab4c16
NVD CPE · HARDWAREciscoasr_9010Environmental constraint · 2 assertions
Version not applicableCanonical identity product-cecc7d25e1f52a276317b8d7c1142df49b9856fa88a4e9398bb5bb5a8da98ebdLinked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    433f4a82-04a4-4eaa-8c19-f7581dcd8d29
  2. cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 4
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    433f4a82-04a4-4eaa-8c19-f7581dcd8d29
NVD CPE · HARDWAREciscoasr_9901Environmental constraint · 2 assertions
Version not applicableCanonical identity product-500631d9637d1714be4d575b52fe15017bd4ed71ab34207139105753e0023ba5Linked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 4
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    2d5e60ab-94ff-448a-89d8-5d2197e21c74
  2. cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 5
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    2d5e60ab-94ff-448a-89d8-5d2197e21c74
NVD CPE · HARDWAREciscoasr_9903Environmental constraint · 1 assertions
Version not applicableCanonical identity product-d7f6789e0fccb515739d3adcb2cd89c7b1c4bd279e5b3fbc09a5203c3aa71c98Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:asr_9903:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 6
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    fa241214-2f05-4360-9b50-385355e29cf4
NVD CPE · HARDWAREciscoasr_9904Environmental constraint · 2 assertions
Version not applicableCanonical identity product-a422f65dc74a0df045ed5464b21e82dae402fb78a25630e694496c8a03b80500Linked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 5
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a93212a4-50ab-42e7-89a4-5fbbaea050c3
  2. cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 7
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a93212a4-50ab-42e7-89a4-5fbbaea050c3
NVD CPE · HARDWAREciscoasr_9906Environmental constraint · 2 assertions
Version not applicableCanonical identity product-209e640d48c2b954968672513e1b3f876e7b6e5568b38e5725d5c68bbb74bf4fLinked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 8
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    eda53a61-98b3-458c-8893-61cd7d6b1e48
  2. cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 6
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    eda53a61-98b3-458c-8893-61cd7d6b1e48
NVD CPE · HARDWAREciscoasr_9910Environmental constraint · 2 assertions
Version not applicableCanonical identity product-28be360820ad2d572519a9fb1645fb8e0187dba6d2dd0b67846515e298438ebfLinked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 9
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    f396564e-b477-4a27-a189-ceb737552e25
  2. cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 7
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    f396564e-b477-4a27-a189-ceb737552e25
NVD CPE · HARDWAREciscoasr_9912Environmental constraint · 2 assertions
Version not applicableCanonical identity product-f8227c000eef76f989db048ff31d4107f58c3d82389c725c8c58e4a8bb2dde45Linked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 10
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    5445cc54-acfb-4070-af26-f91feaa85181
  2. cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 8
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    5445cc54-acfb-4070-af26-f91feaa85181
NVD CPE · HARDWAREciscoasr_9920Environmental constraint · 1 assertions
Version not applicableCanonical identity product-904879b48b283822d2779fe4e87f22dccb1f2a5ac769eeca599385f575107c57Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:asr_9920:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 11
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    49e7ed87-8ac0-4107-a7a5-f334236e2906
NVD CPE · HARDWAREciscoasr_9922Environmental constraint · 2 assertions
Version not applicableCanonical identity product-13a448fd7161a05877ce8fbef8006e9e7d23a9f8a0f8f09c1b473c0db973d8e7Linked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 12
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    d7aa58e5-d7e1-48cf-93ff-c60eb85b2bc7
  2. cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 9
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    d7aa58e5-d7e1-48cf-93ff-c60eb85b2bc7
NVD CPE · HARDWAREciscocrs-xEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-6ec6907b0cca8e609a25de74feb4210732b20f6202bd20fca8057431844ea9f9Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:crs-x:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 13
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    62f5e007-0cb6-424c-9ae8-01618c8c44e0
NVD CPE · OPERATING SYSTEMciscoios_xrVulnerable target · 7 assertions
Any version (unconstrained) (>= 6.6.0, < 6.6.12); Any version (unconstrained) (>= 7.0.0, < 7.0.2); Version 5.2.5; Version 6.4.2; Version 6.5.3; Version 6.6.25; Version 7.0.1Canonical identity product-a70ec7fc7d464008f2ddd19bcef52a09c444f9b0cbe4a0ab86461995673f4a82Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    86e05c3f-4095-4b9c-8c11-e32567eb14ac
  2. cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    from including 6.6.0; through excluding 6.6.12
    Match ID
    024d2b99-34d5-48b0-afd6-114200d154e5
  3. cpe:2.3:o:cisco:ios_xr:6.4.2:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    3 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    e67f538a-3e1a-4749-bb8d-4f8043653b6e
  4. cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    4 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    3dc7f758-5ab7-4a45-a889-be9dd8d0474e
  5. cpe:2.3:o:cisco:ios_xr:5.2.5:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    2 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a0b5c0f4-1bec-4b54-abf0-948cff80e5e0
  6. cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    5 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    82af763b-9299-4edc-b42d-b83736839ca1
  7. cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    from including 7.0.0; through excluding 7.0.2
    Match ID
    00afc058-2750-4a6f-b321-df159214fca5
NVD CPE · HARDWAREcisconcs_540-12z20g-sys-aEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-85d5562a0a4658c18bfa2933c003469988b38960ed0d1fef19042f535edcae22Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:ncs_540-12z20g-sys-a:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 10
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    d5494b4b-0bb4-48ae-8b0d-04de649f9313
NVD CPE · HARDWAREcisconcs_540-12z20g-sys-dEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-a7eb9032308b53003a97d286bea6f241f1e2dba11b9df5457bdd54c36b9a7ae3Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:ncs_540-12z20g-sys-d:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 11
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    b3a0c835-6c98-4ab6-89ff-c27117bb6b12
NVD CPE · HARDWAREcisconcs_540-24z8q2c-sysEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-d09c6d93e71a5f2ccd6924e2e1aeb87e16b7aa60c28e5fe49a4d386272fba4beLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:ncs_540-24z8q2c-sys:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 12
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    395f25cd-fdf5-48d7-a048-a6b4f4779ec9
NVD CPE · HARDWAREcisconcs_540-28z4c-sys-aEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-eb9ffdf33e85cb9069264366d3f67884284589adac7eb723f8352e24e2d9e9ceLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:ncs_540-28z4c-sys-a:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 13
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    2e926bbc-f5c5-4d02-8a62-f1a5de3c54da
NVD CPE · HARDWAREcisconcs_540-28z4c-sys-dEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-5313510ca3b387336609998cb0931a85ee9fe8e8671c6126f9e1327ac6758df8Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:ncs_540-28z4c-sys-d:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 14
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    efb1323a-c472-4ea1-a969-1d1c10ab0ce8
NVD CPE · HARDWAREcisconcs_540-acc-sysEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-74ebe3a9d7b8721b709c2d1b581a9304bfdd60719c707ff7e9352bc433b4fc8eLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:ncs_540-acc-sys:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 15
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    124ce49c-1c2b-40a5-8f59-7a223766e12f
NVD CPE · HARDWAREcisconcs_540lEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-30c4c8f41f4f92706a8cc8e89ae5cdac0bcbde6b9e0049e846e34b677bb459caLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:ncs_540l:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    5 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    7987161e-e0c6-4bbb-91fc-f49a7f4ae6b6
NVD CPE · HARDWAREcisconcs_540x-12z16g-sys-aEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-ff4f003ed6967ab045e35f06880d9d5c6a4074969e5096091c23e62a581242c6Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:ncs_540x-12z16g-sys-a:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 16
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a83f3d33-0674-4f74-aea9-bc824d8536f5
NVD CPE · HARDWAREcisconcs_540x-12z16g-sys-dEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-2983a100167eda7f8482abeb47e3097d0ea795998e2d77a376f0fbb8e6b74d84Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:ncs_540x-12z16g-sys-d:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 17
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    784a450d-8dca-43e5-8044-a9f2363fb006

Affected-product evidence

Accepted scope and product mapping

1 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-0774b265c0e837e737aaf99ed0f2450c048e61f34267ca59d8623878b839334e · product-a70ec7fc7d464008f2ddd19bcef52a09c444f9b0cbe4a0ab86461995673f4a82

Source class
Nvd cpe vulnerable target
Assertions
7
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
194dc6ad-90be-498b-b9d0-bb45667df2371c818bd9-7041-4757-ae75-9719bf215c543c861cf3-4faf-4556-b278-fdc9e55796efa357037c-8dd7-4431-a162-acdc69da8552c32f5fa0-3ffa-4fe8-8e4e-71e2e8e0d01dc95882d4-148e-40c1-afa2-2eb20ecd7391ed929b42-5d32-4dc8-a665-75a2fd6ff443
Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class
Direct cve affected
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
375bbd3e-e5e8-473f-afca-cc38db06c62d

Assessments

CVSS by origin

8.8
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.3
NVDCVSS 2.0 · role Primary · priority eligiblevalid_matchAV:A/AC:L/Au:N/C:C/I:C/A:C
8.8
psirt@cisco.comCVSS 3.0 · role Secondary · priority eligiblevalid_matchCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8
ciscoCVSS 3.0 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

8.8Priority eligible

cisco

CVSS 3.0 · Primary · Original assertion · rank 1

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Validation
Valid match
Recomputed
8.8
Decision reason
Evidence supported
Policy
casca-direct-cvss-eligibility-v1

Assessments are retained side by side under closed precedence. Cascade never averages CVSS.

Evidence boundaries

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; remaining scope stays source-scoped.
  • NVD-carried upstream facts remain derivative; independent corroboration requires a separately authored source.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.
  • OSV aggregation and OSV-converted NVD material are not independent corroboration.
  • Red Hat facts are vendor assertions for the exact supplied products.
  • Nonmembership and not-yet-observed states are not proof of safety.