CVE-2025-6558

Exp

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)

Published: 2025-07-15 Last update: 2025-11-06 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2025-6558 is rated Critical Active Threat (98.4/100): CVSS High severity, with high exploitation likelihood (EPSS 9.52%, 95th percentile). Core evidence: CISA KEV confirms active exploitation (added 2025-07-22) affecting Google / Chromium. a weakness (CWE-20) Unauthenticated remote administrative access may be possible. EPSS rose +9.20% over the last day, indicating growing attacker interest. Mandatory action: The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2025-6558

Name: Google Chromium ANGLE and GPU Improper Input Validation Vulnerability · CISA KEV detail

Exploit added: 2025-07-22

Action due: 2025-08-12

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Exploit prediction scoring system (EPSS) score for CVE-2025-6558

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.33% 9.52% +9.20%
2 2026-05-11 0.17% 0.33% +0.16%
3 2026-03-31 0.17%

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-6558

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
2.8 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-6558

OS Trackers for CVE-2025-6558

vendor priority summary link
alpine CVE-2025-6558: 1 source package rows (qt6-qtwebengine); 2 state rows across 2 repos (3.22-community, edge-community); fixed 2, open 0. https://security.alpinelinux.org/vuln/CVE-2025-6558
debian end-of-life CVE-2025-6558 end-of-life priority: Debian including 3 source packages (chromium, webkit2gtk, wpewebkit), 15 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 11, open 4. https://security-tracker.debian.org/tracker/CVE-2025-6558
redhat high https://access.redhat.com/security/cve/CVE-2025-6558
suse medium CVE-2025-6558 severity moderate: SUSE including 101 source package names (WebKitGTK-4.0-lang-2.48.5-150400.4.122.1, WebKitGTK-4.0-lang-2.48.5-150600.12.43.1, …), 382 product×package rows across 33 product lines (SUSE Enterprise Storage 7.1, SUSE Liberty Linux 8, … (33 product lines)): Fixed 382. https://www.suse.com/security/cve/CVE-2025-6558/
ubuntu high CVE-2025-6558 high priority: Ubuntu including 6 source packages (chromium-browser, qtwebkit-opensource-src, qtwebkit-source, webkit2gtk, webkitgtk, wpewebkit), 41 status rows across 8 suites (bionic, focal, jammy, noble, plucky, questing, upstream, xenial): ignored 14, DNE 13, released 7, not-affected 4, needs-triage 3. https://ubuntu.com/security/CVE-2025-6558

Affected software / configurations for CVE-2025-6558

Vendor Product Version Raw CPE
google chrome < 138.0.7204.157 cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
apple safari < 18.6 cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
apple ipados < 18.6 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone_os < 18.6 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple macos < 15.6 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple visionos < 2.6 cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
apple watchos < 11.6 cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
wpewebkit wpe_webkit < 2.48.0 cpe:2.3:a:wpewebkit:wpe_webkit:*:*:*:*:*:*:*:*
webkitgtk webkitgtk < 2.48.0 cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*

References for CVE-2025-6558

URL Tags
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
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
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
cvelogic Threat Intelligence