CVE-2026-87621: google chrome Out-of-bounds Write
Vulnerability summary
CVE-2026-87621 is a critical (CVSS 9.6) Out-of-bounds Write vulnerability in google chrome. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 29.6% of scored vulnerabilities.
Severe, CVSS 9.6 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5 · Related 3Timeline
- 09-09-2026PublishedVulnerability first disclosed.
- 10-09-2026Last modifiedVulnerability information updated.
Description
Out of bounds write in ANGLE in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
CVSS metrics
3 scores · 3 sources · 1 version- OSV · DebianEcosystem advisory · calculated9.6CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- NVDNIST9.6CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS trend
Probability
0.36%
Chance of exploitation in the next 30 days
Percentile
30%
Versus all other CVEs
30-day change
Decrease -0.10 pp
From 0.46% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- chromium< 153.0.8010.52-1~deb12u1 | < 153.0.8010.47-2~deb13u1 | < 153.0.8010.47-1
Google1 product
- chrome≥ 153.0.8010.36, < 153.0.8010.36 | < 153.0.8010.36
2 vendors · 2 products
References
3 links- chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.htmlRelease NotesVendor Advisory
- issues.chromium.org/issues/536664909Permissions Required
