What is CVE-2025-12905?

CVE-2025-12905 is a medium-severity vulnerability in Google Chrome, classified under Origin Validation Error. CVSS score: 5.4/10. Published 2025-11-08.

How severe is CVE-2025-12905?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Google Chrome

CVE-2025-12905

Inappropriate implementation in Downloads in Google Chrome on Windows prior to 140.0.7339.80 allowed a remote attacker to bypass Mark of the Web via a crafted HTML page. (Chromium security severity: Low)

EPSS: 0.002 (5.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L.

Affected products

Google Chrome — versions 140.0.7339.80
Microsoft Windows

Weakness classification (CWE)

CWE-346 — Origin Validation Error

References

chrome-cve-admin@google.com (Vendor Advisory)
chrome-cve-admin@google.com (Permissions Required)

Frequently asked questions

What is CVE-2025-12905?: CVE-2025-12905 is a medium-severity vulnerability in Google Chrome, classified under Origin Validation Error. CVSS score: 5.4/10. Published 2025-11-08.
How severe is CVE-2025-12905?: Medium severity. CVSS v3 base score is 5.4 out of 10.