Use-after-free in Google Chromium - CVE-2025-9864

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Main Vulnerability Database Vulnerabilities #VU114891

Use-after-free in Google Chromium - CVE-2025-9864

Published: September 2, 2025 / Updated: October 8, 2025


Vulnerability identifier: #VU114891
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-9864
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability: Public exploit is available

Vulnerability details

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the V8 component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


Affected software

Google Chromium
Microsoft Edge
Google Chrome
Prisma Access Browser
Debian Linux
Fedora
Chrome OS
chromium
chromium (Debian package)
cef

How to mitigate CVE-2025-9864

Install update from vendor's website.

Google Chromium - update to 140.0.7339.80
Microsoft Edge - update to 140.0.3485.54
Google Chrome - update to 140.0.7339.80
chromium - addressed in versions 140.0.7339.80-1.el9, 140.0.7339.80-1.el10_2, 140.0.7339.80-1.fc41, 140.0.7339.80-1.fc42, 140.0.7339.80-1.fc43, 140.0.7339.127-1.el9, 140.0.7339.127-1.el10_2, 140.0.7339.127-1.fc41, 140.0.7339.127-1.fc42, 140.0.7339.127-1.fc43
chromium (Debian package) - addressed in versions 140.0.7339.80-1~deb12u1, 140.0.7339.80-1~deb13u1
Chrome OS - update to 140.0.7339.201
cef - addressed in versions 140.1.15^chromium140.0.7339.207-3.fc42, 140.1.15^chromium140.0.7339.207-3.fc43
Prisma Access Browser - update to 141.6.4.55

Links to Public Exploits and PoC-codes

External References

Related Security Bulletins