CVE-2025-12909 — Protection Mechanism Failure in Google Chrome

CWE-693 — Protection Mechanism Failure6 documents6 sources
Severity
5.3MEDIUMNVD
EPSS
0.0%
top 86.45%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Google ChromeChromium
Timeline
PublishedNov 8

Description

Insufficient policy enforcement in Devtools in Google Chrome prior to 140.0.7339.80 allowed a remote attacker to leak cross-origin data via Devtools. (Chromium security severity: Low)

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages3 packages

▶CVEListV5google/chrome140.0.7339.80 — 140.0.7339.80
▶NVDgoogle/chrome< 140.0.7339.80
▶Debianchromium/chromium< 140.0.7339.80-1~deb12u1+2

🔴Vulnerability Details

3
OSV
CVE-2025-12909: Insufficient policy enforcement in Devtools in Google Chrome prior to 140↗2025-11-08
▶
GHSA
GHSA-cvvh-gp7g-9334: Insufficient policy enforcement in Devtools in Google Chrome prior to 140↗2025-11-08
▶
CVEList
CVE-2025-12909: Insufficient policy enforcement in Devtools in Google Chrome prior to 140↗2025-11-07
▶

📋Vendor Advisories

2
Chrome
Stable Channel Update for Desktop: CVE-2025-12908↗2025-09-02
▶
Debian
CVE-2025-12909: chromium - Insufficient policy enforcement in Devtools in Google Chrome prior to 140.0.7339...↗2025
▶
CVE-2025-12909 — Protection Mechanism Failure in Google | cvebase