CVE-2025-9864

Chromium: CVE-2025-9864 Use after free in V8

CVE-2025-9864 is fixed in chromium on 1 platform, first by DEBIAN-CVE-2025-9864, released September 3, 2025. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

8.8

high

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

n/a

<p>This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see <a href="https://chromereleases.googleblog.com/202%5BSS9.1%5D5">Google Chrome Releases</a> for more information.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Linux
chromium · Debian 12.15 (bookworm)	140.0.7339.80-1~deb12u1	DEBIAN-CVE-2025-9864	Sep 3, 2025
chromium · Debian 13.5 (trixie)	140.0.7339.80-1~deb13u1	DEBIAN-CVE-2025-9864	Sep 3, 2025
chromium · Debian 14	140.0.7339.80-1	DEBIAN-CVE-2025-9864	Sep 3, 2025

Details

Published
September 3, 2025
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-9864

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