CASCACascade Atlas

Evidence dossier

CVE-2023-5217

Heap buffer overflow in vp8 encoding in libvpx in Google Chrome prior to 117.0.5938.132 and libvpx 1.13.1 allowed a remote attacker to potentially exploit heap corruption via a…

Exploited in the wild (CISA KEV since Oct 2, 2023). NVD reports CVSS 3.1 8.8. EPSS estimates 49.0% exploit likelihood as of Aug 27, 2026.

85.0–85.7Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

Heap buffer overflow in vp8 encoding in libvpx in Google Chrome prior to 117.0.5938.132 and libvpx 1.13.1 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

State
PUBLISHED
Published
Sep 28, 2023
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
    Chrome

    Record text: Heap buffer overflow in vp8 encoding in libvpx in Google Chrome prior to 117.0.5938.132 and libvpx 1.13.1 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

    Inspect raw assertion
    Field
    container
    Value
    Heap buffer overflow in vp8 encoding in libvpx in Google Chrome prior to 117.0.5938.132 and libvpx 1.13.1 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
    Original evidence ↗
  2. 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 ↗
  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: Google Chromium libvpx Heap Buffer Overflow Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Google Chromium libvpx Heap Buffer Overflow Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 49.01% probability · 98.79th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.490130000000; percentile 0.987900000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Oct 2, 2023 · first observed Jul 19, 2026

Exploit likelihood49.01%

FIRST EPSS · score date Aug 27, 2026 · 98.8th 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

ChromeOriginal assertion
Record text

Heap buffer overflow in vp8 encoding in libvpx in Google Chrome prior to 117.0.5938.132 and libvpx 1.13.1 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

Inspect raw assertion
Field
container
Value
Heap buffer overflow in vp8 encoding in libvpx in Google Chrome prior to 117.0.5938.132 and libvpx 1.13.1 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
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 ↗
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

Google Chromium libvpx Heap Buffer Overflow Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Google Chromium libvpx Heap Buffer Overflow Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

49.01% probability · 98.79th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.490130000000; percentile 0.987900000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
21Underlying assertions
11Canonical products
21Target assertions
0Constraint 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

13 scope groups

Chrome · source assertedGoogleChromeDirect source scope
Affected: 117.0.5938.132 to before 117.0.5938.132 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "117.0.5938.132", "lessThan": "117.0.5938.132", "versionType": "custom"}]
Chrome · source assertedGooglelibvpxDirect source scope
Affected: 1.13.1 to before 1.13.1 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "1.13.1", "lessThan": "1.13.1", "versionType": "custom"}]
NVD CPE · OPERATING SYSTEMappleipadosVulnerable target · 2 assertions
Any version (unconstrained) (>= 17.0, < 17.0.3); Version 16.7Canonical identity product-8e7094ac066248cd4828b6ec8e3a96d010ed1c68f6083af46638775d737da0adLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    5 · node/0 · match 0
    Logic
    OR
    Version bounds
    from including 17.0; through excluding 17.0.3
    Match ID
    5383a8bf-7ad6-4d5a-9b57-de1bc2c59e09
  2. cpe:2.3:o:apple:ipados:16.7:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    5 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a377b7c9-a339-49a9-9c96-a6f5f738b40c
NVD CPE · OPERATING SYSTEMappleiphone_osVulnerable target · 2 assertions
Any version (unconstrained) (>= 17.0, < 17.0.3); Version 16.7Canonical identity product-665d7155d02581979844685e7fca6c2680af997f9200af455887b1c71c483272Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:apple:iphone_os:16.7:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    5 · node/0 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    ef582b55-1d2f-4f53-9f3d-db52f211b600
  2. cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    5 · node/0 · match 2
    Logic
    OR
    Version bounds
    from including 17.0; through excluding 17.0.3
    Match ID
    f1d28032-f9e6-45e7-98b6-7ce2351c4c99
NVD CPE · OPERATING SYSTEMdebiandebian_linuxVulnerable target · 3 assertions
Version 10.0; Version 11.0; Version 12.0Canonical identity product-3ccb4bc87dfae98fa2f2a06435fe5b3d9be78572fb958a89f2d7a96b4066447eLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    4 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    07b237a9-69a3-4a9c-9da0-4e06bd37ae73
  2. cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    4 · node/0 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    46d69dcc-ae4d-4ea5-861c-d60951444c6c
  3. cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    4 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    fa6feec2-9f11-4643-8827-749718254fed
NVD CPE · OPERATING SYSTEMfedoraprojectfedoraVulnerable target · 3 assertions
Version 37; Version 38; Version 39Canonical identity product-c96c7662a6606ed7594747da3d7ba9ee3a9758ab11658f6a3f42616361472e47Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    3 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    cc559b26-5dfc-4b7a-a27c-b77de755dff9
  2. cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    3 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    e30d0e6f-4ae8-4284-8716-991dfa48cc5d
  3. cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    3 · node/0 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    b8edb836-4e6a-4b71-b9b2-aa3e03e0f646
NVD CPE · APPLICATIONgooglechromeVulnerable target · 1 assertions
Any version (unconstrained) (< 117.0.5938.132)Canonical identity product-6239ec405e2e1cdd75fd8ed01bb6845a448ecca3c3edcc8b0c5ccc2adb8b6bcdLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    6 · node/0 · match 0
    Logic
    OR
    Version bounds
    through excluding 117.0.5938.132
    Match ID
    8f840d02-4766-4644-8fd6-637e945e88fb
NVD CPE · APPLICATIONmicrosoftedgeVulnerable target · 2 assertions
Version 116.0.1938.98; Version 117.0.2045.47Canonical identity product-392790dbff8af15e1e2ba8b85e7e6ce068ad4439e95ad4241880503780c43a59Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:a:microsoft:edge:116.0.1938.98:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    83749e8d-d4ec-4c5e-b031-8dd4c5c3aa72
  2. cpe:2.3:a:microsoft:edge:117.0.2045.47:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    39f5ab10-a20e-4b12-863d-9335a6344130
NVD CPE · APPLICATIONmicrosoftedge_chromiumVulnerable target · 2 assertions
Version 116.0.5845.229; Version 117.0.5938.132Canonical identity product-151fa43ce688e686b0979b3df6d6fc924c7ee990e167f81db3729dc080ad5098Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:a:microsoft:edge_chromium:117.0.5938.132:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    0a1735c0-78bf-4b9c-9ec6-64471c609046
  2. cpe:2.3:a:microsoft:edge_chromium:116.0.5845.229:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    494b17da-b40e-4b79-925d-2f439c7a4bcc
NVD CPE · APPLICATIONmozillafirefoxVulnerable target · 3 assertions
Any version (unconstrained) (< 115.3.1); Any version (unconstrained) (< 118.0.1); Any version (unconstrained) (< 118.1)Canonical identity product-07fd419647bc4be85f7cd99fb6db991c405f59f4526c86f98007cccadd88fb6bLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:a:mozilla:firefox:*:*:*:*:*:android:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    2 · node/0 · match 2
    Logic
    OR
    Version bounds
    through excluding 118.1
    Match ID
    c0246068-275f-4d13-93b9-44ad91d2effb
  2. cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    2 · node/0 · match 1
    Logic
    OR
    Version bounds
    through excluding 118.0.1
    Match ID
    b6bea417-5012-4315-aff2-20bbf931a550
  3. cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    2 · node/0 · match 0
    Logic
    OR
    Version bounds
    through excluding 115.3.1
    Match ID
    93b700cd-4d4c-4d92-b105-9b02e21246bb
NVD CPE · APPLICATIONmozillathunderbirdVulnerable target · 1 assertions
Any version (unconstrained) (< 115.3.1)Canonical identity product-148c720470a65e23ffba2cd2146b70004a125bb02def92b1d58b670632c22fffLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    2 · node/0 · match 3
    Logic
    OR
    Version bounds
    through excluding 115.3.1
    Match ID
    c287fd41-1668-4ba8-9bf5-7c56420f6f38
NVD CPE · OPERATING SYSTEMredhatenterprise_linuxVulnerable target · 1 assertions
Version 9.0Canonical identity product-ec20120153af988d42a6a2dfd3cdd9595762b35581f66014faaa4f85d8f844eeLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    7 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    7f6fb57c-2bc7-487c-96dd-132683aeb35d
NVD CPE · APPLICATIONwebmprojectlibvpxVulnerable target · 1 assertions
Any version (unconstrained) (< 1.13.1)Canonical identity product-890aa7c69bab72e98d9d7221ede1713d517f7a140f061d6379f35f91b824c52dLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:a:webmproject:libvpx:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    through excluding 1.13.1
    Match ID
    385f58cc-4aa0-4c41-9394-c9481586689e

Affected-product evidence

Accepted scope and product mapping

11 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-a8002e9a4c58b83fa97f47fe42903a60facd8770768e9b325e288d873b8b8255 · product-07fd419647bc4be85f7cd99fb6db991c405f59f4526c86f98007cccadd88fb6b

Source class
Nvd cpe vulnerable target
Assertions
3
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
07a50476-ad09-47a1-aaf5-c5ccaed7c3316531de53-7e1d-4b70-bca6-570c2541911b9436d482-0146-4304-8722-4431198c8801
Mapping establishedEvidence supported

vendor-a8002e9a4c58b83fa97f47fe42903a60facd8770768e9b325e288d873b8b8255 · product-148c720470a65e23ffba2cd2146b70004a125bb02def92b1d58b670632c22fff

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
444aca14-0124-4523-ae95-77b933342b66
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-151fa43ce688e686b0979b3df6d6fc924c7ee990e167f81db3729dc080ad5098

Source class
Nvd cpe vulnerable target
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
6189ba47-bd16-41bc-8516-c855e90a74b6adfcf744-a6c5-4331-aea4-1a3cca6d5680
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-392790dbff8af15e1e2ba8b85e7e6ce068ad4439e95ad4241880503780c43a59

Source class
Nvd cpe vulnerable target
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
1d4713dc-befa-4285-a751-063b2f8decbdc7228ef7-88dd-4443-8908-eb911102993a
Mapping establishedEvidence supported

vendor-66ae8c5e06427f7450637d18322b0dc411c0b469d940341cf076a620d444fe3c · product-3ccb4bc87dfae98fa2f2a06435fe5b3d9be78572fb958a89f2d7a96b4066447e

Source class
Nvd cpe vulnerable target
Assertions
3
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
84b625b6-7a4a-469b-a863-2e21931659f0eb23d138-0c1b-4f56-aab1-a3fe171f3333fbdce41f-96ce-40ff-bc5d-443404251b07
Mapping establishedEvidence supported

vendor-88869ec57256fdf5d0b9ffd6f3d141ad371acdd6f81405ddb6c5e9e45b10869c · product-6239ec405e2e1cdd75fd8ed01bb6845a448ecca3c3edcc8b0c5ccc2adb8b6bcd

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
44a4e617-2216-4c07-bd7b-18521e801f44
Mapping establishedEvidence supported

vendor-d6ed6f1e35de2e16a8a10f2ae364dab009bb2afadd609071b20da24d60ce2829 · product-665d7155d02581979844685e7fca6c2680af997f9200af455887b1c71c483272

Source class
Nvd cpe vulnerable target
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
b7335eb8-8770-4a09-9b02-5208b81a66ddf4426d5e-21f1-4e7d-97ff-4238e1f2621d
Mapping establishedEvidence supported

vendor-d2df2c73d507028d255dd31368910b2abb4bb59bc114dad234f470c4f607f3da · product-890aa7c69bab72e98d9d7221ede1713d517f7a140f061d6379f35f91b824c52d

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
0454afa0-2409-4534-a9d0-3f4a6749c66a
Mapping establishedEvidence supported

vendor-d6ed6f1e35de2e16a8a10f2ae364dab009bb2afadd609071b20da24d60ce2829 · product-8e7094ac066248cd4828b6ec8e3a96d010ed1c68f6083af46638775d737da0ad

Source class
Nvd cpe vulnerable target
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
2d0fc4b6-8e7a-4f3c-a3f4-34acf7f3d1db41c695c8-a982-4475-902f-1b2d33615840
Mapping establishedEvidence supported

vendor-2d566b06907460b10e6e48c8544126e19f1d6df137983056edae8d0b51e34e45 · product-c96c7662a6606ed7594747da3d7ba9ee3a9758ab11658f6a3f42616361472e47

Source class
Nvd cpe vulnerable target
Assertions
3
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
0494889b-25f5-420e-8f9a-7f5e185e63bd3aefb832-9f42-4b44-9883-d19434922ad8f6dc0e26-cbeb-45c6-be35-f30d95539c8b
Mapping establishedEvidence supported

vendor-c759fafc60d6abc1277ecbf1ee6294d1f25ae0a4c7d5d0d9355c414b2db182cc · product-ec20120153af988d42a6a2dfd3cdd9595762b35581f66014faaa4f85d8f844ee

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
50f7b148-c95e-4946-8870-55b2c7ea8363
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
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
3934c373-9e3c-4ae7-8efe-7eb3810be20b5ebec9f7-b429-418c-88cd-56b58724e3c8

Assessments

CVSS by origin

8.8
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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:N/AC:L/PR:N/UI:R/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:N/AC:L/PR:N/UI:R/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.