Heap-based buffer overflow in Google Chromium - CVE-2026-2648

Vulnerability identifier: #VU123060

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-2026-2648

CWE-ID: CWE-122

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted HTML content in PDFium. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Google Chromium
Microsoft Edge
Google Chrome
Prisma Access Browser
Debian Linux
Gentoo Linux
Fedora
Chrome OS
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 144.0.7559.109
Microsoft Edge - update to 145.0.3800.70
Google Chrome - update to 145.0.7632.109
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 145.0.7632.109-1.el9, 145.0.7632.109-1.el10_1, 145.0.7632.109-1.fc42, 145.0.7632.109-1.fc43, 145.0.7632.109-1.fc44
Chrome OS - update to 145.0.7632.154
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 145.0.7632.109-1~deb12u3, 145.0.7632.109-1~deb13u3

• https://chromereleases.googleblog.com/2026/02/stable-channel-update-for-desktop_18.html
• https://crbug.com/477033835

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