Improperly implemented security check for standard in Google Chromium - CVE-2026-3543

Vulnerability identifier: #VU123592

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-2026-3543

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
Gentoo Linux
Fedora
cef
chromium
www-client/vivaldi
www-client/opera
www-client/microsoft-edge
www-client/chromium
www-client/google-chrome
chromium (Debian package)

Install update from vendor's website.

Google Chromium - update to 145.0.7632.159
Microsoft Edge - addressed in versions 144.0.3719.162, 145.0.3800.97
Google Chrome - update to 145.0.7632.159
cef - addressed in versions 145.0.28^chromium145.0.7632.159-1.fc42, 145.0.28^chromium145.0.7632.159-1.fc43, 145.0.28^chromium145.0.7632.159-1.fc44
chromium - addressed in versions 145.0.7632.159-1.el9, 145.0.7632.159-1.el10_1, 145.0.7632.159-1.el10_2, 145.0.7632.159-1.el10_3, 145.0.7632.159-1.fc42, 145.0.7632.159-1.fc43, 145.0.7632.159-1.fc44
Prisma Access Browser - update to 146.3.8.76
www-client/vivaldi - update to 7.8.3925.76
www-client/opera - update to 130.0.5846.0
www-client/microsoft-edge - update to 145.0.3800.97
www-client/chromium - update to 145.0.7632.159
www-client/google-chrome - update to 145.0.7632.159
chromium (Debian package) - addressed in versions 145.0.7632.159-1~deb12u1, 145.0.7632.159-1~deb13u1

• https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop.html
• https://crbug.com/485267831

• Multiple vulnerabilities in Google Chrome
• Debian update for chromium
• Fedora 44 update for cef
• Fedora 43 update for cef
• Fedora 42 update for cef
• Fedora EPEL 9 update for chromium
• Fedora EPEL 10.2 update for chromium
• Fedora 42 update for chromium
• Fedora EPEL 10.1 update for chromium
• Fedora 43 update for chromium
• Fedora 44 update for chromium
• Fedora EPEL 10.3 update for chromium
• Multiple vulnerabilities in Microsoft Edge
• Multiple vulnerabilities in Prisma Access Browser
• Gentoo update for Chromium, Google Chrome, Microsoft Edge, Opera, Vivaldi