CVE-2026-12031: Google Chrome Sandbox Escape Vulnerability on Windows Prior to 149.0.7827.115
A NVD · · CVE-2026-12031
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
The vulnerability requires an already-compromised renderer process, limiting practical exploitability; this is a routine patch notification with no indication of active exploitation.
Description
CVE-2026-12031 describes an inappropriate implementation in Google Chrome's Views component on Windows (versions prior to 149.0.7827.115). The vulnerability allows an attacker who has already compromised the renderer process to perform a sandbox escape and bypass an additional security layer. Chromium classifies the security severity as "High". This is a routine patch announcement with no evidence of active exploitation in the field.
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