Improperly implemented security check for standard in Google Chromium - CVE-2025-12727

Vulnerability identifier: #VU118134

CSH Severity: Medium

CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-12727

CWE-ID: CWE-358

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 incorrect implementation in V8 in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and compromise the system.

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

Install update from vendor's website.

Google Chromium - update to 142.0.7444.135
Microsoft Edge - update to 142.0.3595.65
Google Chrome - update to 142.0.7444.134
cef - addressed in versions 142.0.10^chromium142.0.7444.162-2.fc42, 142.0.10^chromium142.0.7444.162-2.fc43
chromium - addressed in versions 142.0.7444.134-1.el9, 142.0.7444.134-1.el10_2, 142.0.7444.134-1.fc41, 142.0.7444.134-1.fc43
chromium (Debian package) - addressed in versions 142.0.7444.134-1~deb12u1, 142.0.7444.134-1~deb13u1
Chrome OS - update to 142.0.7444.147
Prisma Access Browser - update to 143.37.2.193

• https://chromereleases.googleblog.com/2025/11/stable-channel-update-for-desktop.html
• https://crbug.com/454485895

• Multiple vulnerabilities in Google Chrome
• Multiple vulnerabilities in Microsoft Edge
• Debian update for chromium
• Fedora EPEL 10.2 update for chromium
• Fedora 43 update for chromium
• Fedora EPEL 9 update for chromium
• Fedora 41 update for chromium
• Multiple vulnerabilities in Google ChromeOS
• Fedora 42 update for cef
• Fedora 43 update for cef
• Multiple vulnerabilities in Prisma Access Browser