Heap-based buffer overflow in Google Chromium - CVE-2025-8879

Vulnerability identifier: #VU113953

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-2025-8879

CWE-ID: CWE-122

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted HTML content in libaom. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Google Chromium
Microsoft Edge
Google Chrome
Gentoo Linux
Debian Linux
Fedora
openEuler
Chrome OS
libaom-devel
libaom
aom-debugsource
aom-debuginfo
aom
www-client/opera
cef
chromium
chromium (Debian package)
www-client/microsoft-edge
www-client/google-chrome
www-client/chromium

Install update from vendor's website.

Google Chromium - update to 139.0.7258.127
Microsoft Edge - update to 139.0.3405.102
Google Chrome - update to 139.0.7258.127
libaom-devel - update to 3.8.0-4
libaom - update to 3.8.0-4
aom-debugsource - update to 3.8.0-4
aom-debuginfo - update to 3.8.0-4
aom - update to 3.8.0-4
www-client/opera - update to 122.0.5643.142
Chrome OS - addressed in versions 138.0.7204.296, 139.0.7258.137
cef - update to 139.0.26^chromium139.0.7258.127-1.fc42
chromium - addressed in versions 139.0.7258.127-1.el9, 139.0.7258.127-1.el10_1, 139.0.7258.127-1.fc41, 139.0.7258.127-1.fc42
chromium (Debian package) - addressed in versions 139.0.7258.127-1~deb12u1, 139.0.7258.127-1~deb13u1
www-client/microsoft-edge - update to 141.0.3537.71
www-client/google-chrome - update to 141.0.7390.107
www-client/chromium - update to 141.0.7390.107

• https://chromereleases.googleblog.com/2025/08/stable-channel-update-for-desktop_12.html
• https://crbug.com/432035817

• Multiple vulnerabilities in Google Chrome
• Debian update for chromium
• Fedora EPEL 9 update for chromium
• Fedora EPEL 10.1 update for chromium
• Fedora 42 update for chromium
• Fedora 41 update for chromium
• Fedora 42 update for chromium
• Fedora 41 update for chromium
• Multiple vulnerabilities in Microsoft Edge
• Multiple vulnerabilities in Google ChromeOS
• Fedora 42 update for cef
• Multiple vulnerabilities in Google ChromeOS LTS
• Gentoo update for Chromium, Google Chrome, Microsoft Edge. Opera
• openEuler 24.03 LTS SP3 update for aom
• openEuler 24.03 LTS SP1 update for aom