Buffer overflow in Google Chromium - CVE-2026-8545

Vulnerability identifier: #VU131502

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-2026-8545

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 Compositing in Google Chrome. A remote attacker can trick the victim to visit a specially crafted webpage, trigger memory corruption and execute arbitrary code on the system.

Google Chromium
Microsoft Edge
Google Chrome
Debian Linux
Fedora
chromium
chromium (Debian package)

Install update from vendor's website.

Google Chromium - update to 148.0.7778.167
Microsoft Edge - update to 148.0.3967.70
Google Chrome - update to 148.0.7778.167
chromium - addressed in versions 148.0.7778.167-1.el9, 148.0.7778.167-1.el10_1, 148.0.7778.167-1.el10_2, 148.0.7778.167-1.el10_3, 148.0.7778.167-1.fc42, 148.0.7778.167-1.fc43, 148.0.7778.167-1.fc44, 148.0.7778.178-1.fc42, 148.0.7778.178-1.fc43
chromium (Debian package) - addressed in versions 148.0.7778.167-1~deb12u1, 148.0.7778.167-1~deb13u1

• https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
• https://crbug.com/497486030

• Multiple vulnerabilities in Google Chrome
• Debian update for chromium
• Fedora 42 update for chromium
• Fedora 43 update for chromium
• Fedora 44 update for chromium
• Fedora EPEL 10.2 update for chromium
• Fedora EPEL 10.3 update for chromium
• Fedora EPEL 10.1 update for chromium
• Fedora EPEL 9 update for chromium
• Multiple vulnerabilities in Microsoft Edge
• Fedora 42 update for chromium
• Fedora 43 update for chromium