Improperly implemented security check for standard in Google Chromium - CVE-2025-9865

Vulnerability identifier: #VU114892

CSH Severity: High

CVSS v4: 7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-9865

CWE-ID: CWE-358

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to incorrect implementation in Toolbar in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and gain access to sensitive information.

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

Install update from vendor's website.

Google Chromium - update to 140.0.7339.80
Microsoft Edge - update to 140.0.3485.54
Google Chrome - update to 140.0.7339.80
chromium - addressed in versions 140.0.7339.80-1.el9, 140.0.7339.80-1.el10_2, 140.0.7339.80-1.fc41, 140.0.7339.80-1.fc42, 140.0.7339.80-1.fc43
chromium (Debian package) - addressed in versions 140.0.7339.80-1~deb12u1, 140.0.7339.80-1~deb13u1
cef - addressed in versions 140.1.15^chromium140.0.7339.207-3.fc42, 140.1.15^chromium140.0.7339.207-3.fc43
Prisma Access Browser - update to 141.6.4.55

• https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop.html
• https://crbug.com/437147699

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