CASCACascade Atlas

Evidence dossier

CVE-2018-0167

Multiple Buffer Overflow vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could…

Exploited in the wild (CISA KEV since Mar 3, 2022). NVD reports CVSS 3.1 8.8. EPSS estimates 3.4% exploit likelihood as of Aug 27, 2026.

69.8–71.0Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

Multiple Buffer Overflow vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. Cisco Bug IDs: CSCuo17183, CSCvd73487.

State
PUBLISHED
Published
Mar 28, 2018
Updated
Jan 12, 2026
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: Multiple Buffer Overflow vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. Cisco Bug IDs: CSCuo17183, CSCvd73487.

    Inspect raw assertion
    Field
    container
    Value
    Multiple Buffer Overflow vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. Cisco Bug IDs: CSCuo17183, CSCvd73487.
    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, and XE Software Buffer Overflow Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 3.38% probability · 87.88th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.033760000000; percentile 0.878800000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Mar 3, 2022 · first observed Jul 19, 2026

Exploit likelihood3.38%

FIRST EPSS · score date Aug 27, 2026 · 87.9th 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

Multiple Buffer Overflow vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. Cisco Bug IDs: CSCuo17183, CSCvd73487.

Inspect raw assertion
Field
container
Value
Multiple Buffer Overflow vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. Cisco Bug IDs: CSCuo17183, CSCvd73487.
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, and XE Software Buffer Overflow Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

3.38% probability · 87.88th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.033760000000; percentile 0.878800000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
24Underlying assertions
18Canonical products
9Target assertions
15Constraint assertions

Grouped from 8 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

19 scope groups

cisco · source assertedn/aCisco IOS, IOS XE, and IOS XRDirect source scope
Affected: Cisco IOS, IOS XE, and IOS XR
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "Cisco IOS, IOS XE, and IOS XR"}]
NVD CPE · HARDWAREciscoasr_9001Environmental constraint · 1 assertions
Version not applicableCanonical identity product-cbb6a64cd76f93814f9ffbd38fad8ca11ba8e81e213e4e169a5ce30f53509e93Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    324c97e6-1810-404f-9f45-6240f99ff039
NVD CPE · HARDWAREciscoasr_9006Environmental constraint · 1 assertions
Version not applicableCanonical identity product-e34ba24d6024231202802383edcf903e9a0f790d71683e4a0b3ce73f75b2d9c0Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    57eb55bb-41b7-40a1-b6f5-142fe8ab4c16
NVD CPE · HARDWAREciscoasr_9010Environmental constraint · 1 assertions
Version not applicableCanonical identity product-cecc7d25e1f52a276317b8d7c1142df49b9856fa88a4e9398bb5bb5a8da98ebdLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    433f4a82-04a4-4eaa-8c19-f7581dcd8d29
NVD CPE · HARDWAREciscoasr_9904Environmental constraint · 1 assertions
Version not applicableCanonical identity product-a422f65dc74a0df045ed5464b21e82dae402fb78a25630e694496c8a03b80500Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a93212a4-50ab-42e7-89a4-5fbbaea050c3
NVD CPE · HARDWAREciscoasr_9906Environmental constraint · 1 assertions
Version not applicableCanonical identity product-209e640d48c2b954968672513e1b3f876e7b6e5568b38e5725d5c68bbb74bf4fLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 4
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    eda53a61-98b3-458c-8893-61cd7d6b1e48
NVD CPE · HARDWAREciscoasr_9910Environmental constraint · 1 assertions
Version not applicableCanonical identity product-28be360820ad2d572519a9fb1645fb8e0187dba6d2dd0b67846515e298438ebfLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 5
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    f396564e-b477-4a27-a189-ceb737552e25
NVD CPE · HARDWAREciscoasr_9912Environmental constraint · 1 assertions
Version not applicableCanonical identity product-f8227c000eef76f989db048ff31d4107f58c3d82389c725c8c58e4a8bb2dde45Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 6
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    5445cc54-acfb-4070-af26-f91feaa85181
NVD CPE · HARDWAREciscoasr_9922Environmental constraint · 1 assertions
Version not applicableCanonical identity product-13a448fd7161a05877ce8fbef8006e9e7d23a9f8a0f8f09c1b473c0db973d8e7Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 7
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    d7aa58e5-d7e1-48cf-93ff-c60eb85b2bc7
NVD CPE · OPERATING SYSTEMciscoiosVulnerable target · 4 assertions
Any version (unconstrained) (<= 15.2\(4a\)ea5); Any version (unconstrained) (<= 15.2\(6\)e0a); Any version (unconstrained) (<= 15.6.3m1); Version 5.2.0.baseCanonical identity product-5972f4392170d0d1b4e75a10eb3b383835ead601c8d9b09329525407a4e1471aLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 0
    Logic
    OR
    Version bounds
    through including 15.6.3m1
    Match ID
    65fb1d01-2a6f-496e-ad56-bbe03deb9493
  2. cpe:2.3:o:cisco:ios:5.2.0.base:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    5f1a8de5-8dbb-4a09-a9f2-8b5af5e46896
  3. cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    3 · node/0 · match 0
    Logic
    OR
    Version bounds
    through including 15.2\(4a\)ea5
    Match ID
    c7690ec4-f375-4d0a-8eed-26e01ecfde55
  4. cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    2 · node/0 · match 0
    Logic
    OR
    Version bounds
    through including 15.2\(6\)e0a
    Match ID
    aee6cc29-29a9-4465-b0ea-1ecc435ebc55
NVD CPE · OPERATING SYSTEMciscoios_xeVulnerable target · 4 assertions
Any version (unconstrained) (<= 15.2\(4a\)ea5); Any version (unconstrained) (<= 15.2\(6\)e0a); Any version (unconstrained) (<= 15.6.3m1); Version 5.2.0.baseCanonical identity product-cc06181059d0f387414dd5737700c03a38fe93d65d4a541ac9744a37c25c9f59Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 1
    Logic
    OR
    Version bounds
    through including 15.6.3m1
    Match ID
    e51621b6-010d-4d9f-9a9d-c354d8bb8135
  2. cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    3 · node/0 · match 1
    Logic
    OR
    Version bounds
    through including 15.2\(4a\)ea5
    Match ID
    c90778e3-4a55-498f-9cd6-80f8029aa722
  3. cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    2 · node/0 · match 1
    Logic
    OR
    Version bounds
    through including 15.2\(6\)e0a
    Match ID
    dbbc562a-bc2c-4f64-b5d4-47c33bbee3c7
  4. cpe:2.3:o:cisco:ios_xe:5.2.0.base:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    95ecccec-fa36-481e-b714-3da57ae89c5b
NVD CPE · OPERATING SYSTEMciscoios_xrVulnerable target · 1 assertions
Any version (unconstrained) (>= 4.1, < 5.1.3)Canonical identity product-a70ec7fc7d464008f2ddd19bcef52a09c444f9b0cbe4a0ab86461995673f4a82Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 2
    Logic
    OR
    Version bounds
    from including 4.1; through excluding 5.1.3
    Match ID
    c2213e83-7143-4abf-9efd-eb0928996464
NVD CPE · HARDWARErockwellautomationallen-bradley_armorstratix_5700Environmental constraint · 1 assertions
Version not applicableCanonical identity product-0ba0da2d834f87957eb2cbbe8af7841f85bd29dcc7b144dd62a938a904738cabLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:rockwellautomation:allen-bradley_armorstratix_5700:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    2 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    d8849345-e011-4160-a91c-db760497af9a
NVD CPE · HARDWARErockwellautomationallen-bradley_stratix_5400Environmental constraint · 1 assertions
Version not applicableCanonical identity product-711b032049212e8ff976133d7f8f20aec23230664475ea9b655ebccc5d41c46dLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5400:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    2 · node/1 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    de92939d-3d1e-445c-8888-f3eb4e35a034
NVD CPE · HARDWARErockwellautomationallen-bradley_stratix_5410Environmental constraint · 1 assertions
Version not applicableCanonical identity product-e72ed84163580f65db57520117a86ed0e31a384d4f4e31881f6f6a03a4f1db25Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5410:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    2 · node/1 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    0b148d62-d1b2-4e40-9ddd-a8702dfad2e4
NVD CPE · HARDWARErockwellautomationallen-bradley_stratix_5700Environmental constraint · 1 assertions
Version not applicableCanonical identity product-76672eb41960e7205c5e12de199412ca0600e80bd3c265e838644bb7593a9396Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5700:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    2 · node/1 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    8994dea7-c4ec-47b9-8aea-832af9d1f8e4
NVD CPE · HARDWARErockwellautomationallen-bradley_stratix_5900Environmental constraint · 1 assertions
Version not applicableCanonical identity product-4dc92f03840829c22a031bbd0fab20074744a1fea21ddca61313694e85121613Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5900:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    1609d07f-ff2d-49d8-8672-9c512a69479d
NVD CPE · HARDWARErockwellautomationallen-bradley_stratix_8000Environmental constraint · 1 assertions
Version not applicableCanonical identity product-fbdfd1fd0d57143f69346d569adf8ea0acd2152416922dfa1455ed199d755fceLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8000:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    2 · node/1 · match 4
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    f9a02987-e6f4-41d2-92c5-016a22ac7d0a
NVD CPE · HARDWARErockwellautomationallen-bradley_stratix_8300Environmental constraint · 1 assertions
Version not applicableCanonical identity product-93072d5959f2cbb5479254c634f0df57f9e5d74e379076ba09fc46742636fcb7Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8300:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    3a97b3b5-6606-46f5-bcd8-141fdd6f6729

Affected-product evidence

Accepted scope and product mapping

3 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-0774b265c0e837e737aaf99ed0f2450c048e61f34267ca59d8623878b839334e · product-5972f4392170d0d1b4e75a10eb3b383835ead601c8d9b09329525407a4e1471a

Source class
Nvd cpe vulnerable target
Assertions
4
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
6b01e20a-b284-41a6-8627-8808d0937d63adddff0b-8051-4a05-9cd0-a0b23af2be02d400eeb8-cdf0-450a-bae2-99d43409ddabf15c8f05-32f9-4615-9658-78d896d89911
Mapping establishedEvidence supported

vendor-0774b265c0e837e737aaf99ed0f2450c048e61f34267ca59d8623878b839334e · product-a70ec7fc7d464008f2ddd19bcef52a09c444f9b0cbe4a0ab86461995673f4a82

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
cbddad1f-684e-460d-99f6-dcf6d8af4bbc
Mapping establishedEvidence supported

vendor-0774b265c0e837e737aaf99ed0f2450c048e61f34267ca59d8623878b839334e · product-cc06181059d0f387414dd5737700c03a38fe93d65d4a541ac9744a37c25c9f59

Source class
Nvd cpe vulnerable target
Assertions
4
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
46055d9d-4529-4bc6-a61c-0df015092f2c72e11cb8-63d5-4bad-b12f-ebbff700d62c902e8940-68ac-4202-9f0b-fe0e59f832af9e088fc7-4c76-4168-86c5-d65245564a39
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
1ed1a113-36a7-424b-9ebf-b0bed8d2090e

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
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8
CISA-ADPCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

8.8Priority eligible

CISA-ADP

CVSS 3.1 · Secondary · Independent enrichment · rank 2

CVSS:3.1/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.