CVE-2026-87621: Out-of-bounds write in ANGLE in Google Chrome on Windows prior to 153.0.8010.36 allows remote code execution outside sandbox
A NVD · · CVE-2026-87621
Admiralty grading (A–F · 1–6)
Source reliability
- A Completely reliable
- B Usually reliable
- C Fairly reliable
- D Not usually reliable
- E Unreliable
- F Cannot be judged
Information credibility
- 1 Confirmed
- 2 Probably true
- 3 Possibly true
- 4 Doubtful
- 5 Improbable
- 6 Cannot be judged
NATO Admiralty (AJP-2.1) grades confidence, independent of the risk score. Cross-source corroboration isn't tracked for non-CVE news, so single-source items are capped at a lower credibility number; a low number does not imply low quality.
Key metrics
- EPSS
- 0%
Key insight
This is a sandbox-escape vulnerability in the ANGLE rendering engine that allows attackers to execute code outside Chrome's sandbox, thereby breaking the browser's process isolation.
Description
CVE-2026-87621 is an out-of-bounds write vulnerability in Google Chrome's ANGLE rendering engine on Windows systems. The vulnerability allows an attacker to execute arbitrary code outside Chrome's sandbox via a crafted HTML page, breaking process isolation. It affects Chrome versions prior to 153.0.8010.36 and has been rated High severity by Chromium. There are no reports of active exploitation, but the high severity and ease of triggering (via a web page) necessitate rapid patching.
Risk score
- cvss base
- 0.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 0.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational