Buffer overflow in Google Chromium - CVE-2026-103631

Vulnerability identifier: #VU153209

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-2026-103631

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a boundary error in WebRTC in Google Chrome. A remote attacker can trick the victim to visit a specially crafted webpage, trigger a buffer overflow and execute arbitrary code on the system.

Google Chromium
Google Chrome
Debian Linux
Fedora
Chrome OS
chromium (Debian package)
chromium

Install update from vendor's website.

Google Chromium - update to 154.0.8037.97
Google Chrome - update to 154.0.8037.97
chromium (Debian package) - update to 155.0.8059.39-1~deb13u1
chromium - addressed in versions 154.0.8037.97-1.el9, 154.0.8037.97-1.el10_2, 154.0.8037.97-1.el10_3, 154.0.8037.97-1.el10_4, 154.0.8037.97-1.fc43, 154.0.8037.97-1.fc44, 154.0.8037.97-1.fc45
Chrome OS - update to 154.0.8037.151

• https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop.html
• https://issues.chromium.org/issues/567088927

• Multiple vulnerabilities in Google Chrome
• Fedora 44 update for chromium
• Fedora 45 update for chromium
• Fedora 43 update for chromium
• Fedora EPEL 10.2 update for chromium
• Fedora EPEL 10.4 update for chromium
• Fedora EPEL 10.3 update for chromium
• Fedora EPEL 9 update for chromium
• Multiple vulnerabilities in Google ChromeOS
• Debian update for chromium