Race condition in Google Chromium - CVE-2026-12454

Vulnerability identifier: #VU134707

CSH Severity: High

CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-12454

CWE-ID: CWE-362

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 race condition in Safe Browsing in Google Chrome. A remote attacker can trick the victim to visit a specially crafted webpage and execute arbitrary code on the target system.

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

Install update from vendor's website.

Google Chromium - update to 149.0.7827.155
Microsoft Edge - update to 149.0.4022.80
Google Chrome - update to 149.0.7827.155
chromium - addressed in versions 149.0.7827.155-1.el9, 149.0.7827.155-1.el10_2, 149.0.7827.155-1.el10_3, 149.0.7827.155-1.fc43, 149.0.7827.155-1.fc44
chromium (Debian package) - addressed in versions 149.0.7827.155-1~deb12u1, 149.0.7827.155-1~deb13u1

• https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html
• https://crbug.com/516926968

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