Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-87491

CVE-2026-87491HIGH

Google Chrome — 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 …

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  U  H  H  H    8.8   .0314   87.5   YES

AFFECTED
  Product  Versions         Fixed
  Chrome   153.0.8010.36 –  —

TIMELINE
  Sep 8   Reserved by Chrome
  Sep 9   ADDED TO KEV — CVE-2026-87491 (Google Chrome). Remediation due September 23, 2026.
  Sep 9   Published (CNA: Chrome)
  Sep 24  DUE DATE PASSED — CVE-2026-87491 (Google Chrome). CISA remediation deadline was September 23, 2026; still in catalog.

CWE-787 · CNA: Chrome · CVSS v3.1 · 3 references · NVD status: Analyzed · KEV due September 23, 2026

Description

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)

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
September 8, 2026	Reserved	Reserved by Chrome
September 9, 2026	KEV ADDED	ADDED TO KEV — CVE-2026-87491 (Google Chrome). Remediation due September 23, 2026.
September 9, 2026	Published	Published (CNA: Chrome)
September 24, 2026	DUE DATE PASSED	DUE DATE PASSED — CVE-2026-87491 (Google Chrome). CISA remediation deadline was September 23, 2026; still in catalog.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Google	Chrome	—	153.0.8010.36	—

Weaknesses

CWE-787

References (3)

https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html [Release Notes, Vendor Advisory]
https://issues.chromium.org/issues/543557673 [Permissions Required]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-87491 [US Government Resource]

Authoritative record: CVE-2026-87491 at cve.org

Vendors: google

Weaknesses: CWE-787

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-87491 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.