CVE Details

CVE-2026-87491 Google Chromium V8 Out of Bounds Write Vulnerability
Published: 2026-09-09 CVSS: 8.8 HIGH Product: Google Chromium V8 Due Date: 2026-09-23

Google Chromium V8 contains an out of bounds write vulnerability that allows a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

GitHub PoC

Warning: GitHub PoC repositories are unverified. Some may be fake or contain malware. Use caution and review code before running anything.

No GitHub PoC data.

FIRST EPSS

EPSS estimates the probability of exploitation in the next 30 days. Higher values indicate higher likelihood of real-world exploitation.

No EPSS data.

Timeline

CVE Stalker KEV MITRE GitHub FIRST (EPSS)

MITRE

CVSS

  • Score: 8.8
  • Severity: HIGH
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

SSVC

  • Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

Show Raw Data
Key Remaining Key Value
dataType CVE_RECORD
dataVersion 5.2
cveMetadata > cveId CVE-2026-87491
cveMetadata > assignerOrgId ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28
cveMetadata > state PUBLISHED
cveMetadata > assignerShortName Chrome
cveMetadata > dateReserved 2026-09-08T22:38:36.226Z
cveMetadata > datePublished 2026-09-09T00:09:38.419Z
cveMetadata > dateUpdated 2026-09-09T10:29:23.288Z
containers > cna > affected > 0 > vendor Google
containers > cna > affected > 0 > product Chrome
containers > cna > affected > 0 > versions > 0 > version 153.0.8010.36
containers > cna > affected > 0 > versions > 0 > status affected
containers > cna > affected > 0 > versions > 0 > lessThan 153.0.8010.36
containers > cna > affected > 0 > versions > 0 > versionType custom
containers > cna > descriptions > 0 > lang en
containers > cna > descriptions > 0 > value Out of bounds write in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
containers > cna > problemTypes > 0 > descriptions > 0 > lang en
containers > cna > problemTypes > 0 > descriptions > 0 > description Out of bounds write
containers > cna > problemTypes > 0 > descriptions > 0 > cweId CWE-787
containers > cna > providerMetadata > orgId ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28
containers > cna > providerMetadata > shortName Chrome
containers > cna > providerMetadata > dateUpdated 2026-09-09T00:09:38.419Z
containers > cna > references > 0 > url https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html
containers > cna > references > 1 > url https://issues.chromium.org/issues/543557673
containers > adp > 0 > metrics > 0 > cvssV3_1 > scope UNCHANGED
containers > adp > 0 > metrics > 0 > cvssV3_1 > version 3.1
containers > adp > 0 > metrics > 0 > cvssV3_1 > baseScore 8.8
containers > adp > 0 > metrics > 0 > cvssV3_1 > attackVector NETWORK
containers > adp > 0 > metrics > 0 > cvssV3_1 > baseSeverity HIGH
containers > adp > 0 > metrics > 0 > cvssV3_1 > vectorString CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
containers > adp > 0 > metrics > 0 > cvssV3_1 > integrityImpact HIGH
containers > adp > 0 > metrics > 0 > cvssV3_1 > userInteraction REQUIRED
containers > adp > 0 > metrics > 0 > cvssV3_1 > attackComplexity LOW
containers > adp > 0 > metrics > 0 > cvssV3_1 > availabilityImpact HIGH
containers > adp > 0 > metrics > 0 > cvssV3_1 > privilegesRequired NONE
containers > adp > 0 > metrics > 0 > cvssV3_1 > confidentialityImpact HIGH
containers > adp > 0 > metrics > 1 > other > type ssvc
containers > adp > 0 > metrics > 1 > other > content > timestamp 2026-09-09T10:29:12.810434Z
containers > adp > 0 > metrics > 1 > other > content > id CVE-2026-87491
containers > adp > 0 > metrics > 1 > other > content > options > 0 > Exploitation none
containers > adp > 0 > metrics > 1 > other > content > options > 1 > Automatable no
containers > adp > 0 > metrics > 1 > other > content > options > 2 > Technical Impact total
containers > adp > 0 > metrics > 1 > other > content > role CISA Coordinator
containers > adp > 0 > metrics > 1 > other > content > version 2.0.3
containers > adp > 0 > title CISA ADP Vulnrichment
containers > adp > 0 > providerMetadata > orgId 134c704f-9b21-4f2e-91b3-4a467353bcc0
containers > adp > 0 > providerMetadata > shortName CISA-ADP
containers > adp > 0 > providerMetadata > dateUpdated 2026-09-09T10:29:23.288Z