Is CVE-2025-6558 being actively exploited?

Yes. CVE-2025-6558 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on July 22, 2025.

What is the CVSS score for CVE-2025-6558?

CVE-2025-6558 has a CVSS 3.1 base score of 8.8 (HIGH).

CVE-2025-6558

HIGH · CVSS 8.8CISA KEV: actively exploitedEPSS 9.5%EU EUVD: exploited

Insufficient validation of untrusted input in ANGLE and GPU in Google Chrome prior to 138.0.7204.157 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

Key facts

CVSS score: 8.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-20
EPSS score: 9.5% (95th percentile)
In CISA KEV: Yes, added July 22, 2025
In EU EUVD: Yes (EUVD-2025-21546)
Published: July 15, 2025
NVD last modified: October 1, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Google Chromium ANGLE and GPU Improper Input Validation Vulnerability

Added to the KEV catalog on July 22, 2025; federal remediation due August 12, 2025.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2025-21546 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 1, 2026.

View on the EU Vulnerability Database

Affected products

apple / ipados
apple / iphone os
apple / macos
apple / safari
apple / visionos
apple / watchos
debian / debian linux
google / chrome
webkitgtk / webkitgtk
wpewebkit / wpe webkit

Certified products that may be affected

36 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Apple macOS 15 Sequoia - Apple Inc. - Common Criteria CCEVS-VR-VID-11648-2026 - active
Strong Customer Authentication for Apple Pay on MacBook Air 2024 with M3running macOS Sequoia 15.4 - Apple Inc. - Common Criteria 2025-11-INF-4674 - active
Apple macOS 14 Sonoma - Apple Inc. - Common Criteria CCEVS-VR-VID-11584-2025 - active
Apple iOS 18: iPhone - Apple Inc. - Common Criteria CCEVS-VR-VID-11623-2025 - active
Apple iPadOS 18: iPad - Apple Inc. - Common Criteria CCEVS-VR-VID-11624-2025 - active

See all 36 in the Security Certifications Explorer.

References

http://seclists.org/fulldisclosure/2025/Aug/0(Third Party Advisory)
http://seclists.org/fulldisclosure/2025/Jul/30(Third Party Advisory)
http://seclists.org/fulldisclosure/2025/Jul/32(Third Party Advisory)
http://seclists.org/fulldisclosure/2025/Jul/35(Third Party Advisory)
http://seclists.org/fulldisclosure/2025/Jul/37(Third Party Advisory)
http://www.openwall.com/lists/oss-security/2025/08/02/1(Mailing List)
http://www.openwall.com/lists/oss-security/2026/09/30/18(Mailing List)
https://chromereleases.googleblog.com/2025/07/stable-channel-update-for-desktop_15.html(Release Notes)
https://issues.chromium.org/issues/427162086(Issue Tracking, Permissions Required)
https://lists.debian.org/debian-lts-announce/2025/08/msg00015.html(Mailing List, Third Party Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-6558(US Government Resource)

Last updated October 3, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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