Improperly implemented security check for standard in Google Chromium - CVE-2025-8577

Vulnerability identifier: #VU113657

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-2025-8577

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 Picture In Picture 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
Debian Linux
Fedora
chromium
chromium (Debian package)
Prisma Access

Install update from vendor's website.

Google Chromium - update to 139.0.7258.66
Microsoft Edge - update to 139.0.3405.86
Google Chrome - update to 139.0.7258.66
chromium - addressed in versions 139.0.7258.66-1.el9, 139.0.7258.66-1.el10_1, 139.0.7258.66-1.fc41, 139.0.7258.66-1.fc42
chromium (Debian package) - addressed in versions 139.0.7258.66-1~deb12u1, 139.0.7258.127-1~deb12u1, 139.0.7258.127-1~deb13u1
Prisma Access - update to 139.12.4.128

• https://chromereleases.googleblog.com/2025/08/stable-channel-update-for-desktop.html
• https://crbug.com/384050903

• Multiple vulnerabilities in Google Chrome
• Debian update for chromium
• Multiple vulnerabilities in Microsoft Edge
• Fedora EPEL 9 update for chromium
• Fedora 41 update for chromium
• Fedora EPEL 10.1 update for chromium
• Fedora 42 update for chromium
• Debian update for chromium
• Multiple vulnerabilities in Prisma Access Browser