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Fencer Vulns
high 8.8

CVE-2025-6558 kev in the critical feed json

Insufficient validation of untrusted input in ANGLE and GPU in Google Chrome prior to 138.0.7204.157 allowed a remote attacker to potential…

published 2025-07-15 15 mo ago modified 2026-10-01 38 d ago also EUVD-2025-21546

cvss
8.8
version 3.1, CNA
cisa kev
Exploited
added 2025-07-22
epss
10.9%
EPSS 10.9% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

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)

Patch / fix

cisa 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.

  • google chrome 138.0.7204.157
  • chromium Debian 12 138.0.7204.157-1~deb12u1
  • chromium Debian 14, Debian 13 138.0.7204.157-1
  • wpewebkit Debian 14 2.48.5-1
  • webkit2gtk Debian 12 2.48.5-1~deb12u1
  • webkit2gtk Debian 13 2.48.5-1~deb13u1
  • webkit2gtk Debian 14 2.48.5-1

debian advisories DEBIAN-CVE-2025-6558

  • webkit2gtk Ubuntu 22.04 LTS 2.48.5-0ubuntu0.22.04.1
  • webkit2gtk Ubuntu 24.04 LTS 2.48.5-0ubuntu0.24.04.1
  • webkit2gtk Ubuntu 25.10 2.48.6-1ubuntu2

ubuntu advisories UBUNTU-CVE-2025-6558

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • webkit2gtk3 RHEL 9 2.48.5-1.el9_6
  • webkit2gtk3-jsc RHEL 9 2.48.5-1.el9_6
  • webkit2gtk3 RHEL 8 2.48.5-1.el8_10
  • webkit2gtk3-jsc RHEL 8 2.48.5-1.el8_10
  • webkitgtk4 RHEL 7 ELS 2.48.5-1.el7_9
  • webkitgtk4-jsc RHEL 7 ELS 2.48.5-1.el7_9
  • webkit2gtk3 RHEL 8.4 EUS_LONG_LIFE, RHEL 8.4 AUS 2.48.5-1.el8_4
  • webkit2gtk3-jsc RHEL 8.4 EUS_LONG_LIFE, RHEL 8.4 AUS 2.48.5-1.el8_4

red hat advisories RHSA-2025:15729RHSA-2025:14486RHSA-2025:14434RHSA-2025:14432RHSA-2025:14433RHSA-2025:14423

  • webkit2gtk3 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Desktop Applications 15 SP7 2.54.1-150600.12.81.3
  • webkit2gtk4 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Development Tools 15 SP7 +1 more 2.54.1-150600.12.81.4
  • webkit2gtk3-soup2 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Basesystem 15 SP7 2.54.1-150600.12.81.4
  • webkit2gtk3 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 2.54.1-150400.4.152.2
  • webkit2gtk4 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 2.54.1-150400.4.152.2
  • webkit2gtk3-soup2 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 2.54.1-150400.4.152.2
  • webkit2gtk3 SLES for SAP applications 16.0, SLES 16.0 2.54.1-160000.1.1
  • webkit2gtk4 SLES for SAP applications 16.0, SLES 16.0 2.54.1-160000.1.1

suse advisories SUSE-SU-2026:4858-1SUSE-SU-2026:4676-1SUSE-SU-2026:24225-1SUSE-SU-2025:02973-1SUSE-SU-2025:02777-1SUSE-SU-2025:02766-1

  • webkit2gtk3 openSUSE Leap 16.0 2.54.1-160000.1.1
  • webkit2gtk4 openSUSE Leap 16.0 2.54.1-160000.1.1
  • webkit2gtk3-soup2 openSUSE Leap 16.0 2.54.1-160000.1.1
  • chromium openSUSE Tumbleweed 138.0.7204.157-1.1

opensuse advisories openSUSE-SU-2026:22076-1openSUSE-SU-2025:15350-1

  • webkit2gtk3 AlmaLinux 8 2.48.5-1.el8_10
  • webkit2gtk3-jsc AlmaLinux 8 2.48.5-1.el8_10
  • webkit2gtk3 AlmaLinux 9 2.48.5-1.el9_6
  • webkit2gtk3-jsc AlmaLinux 9 2.48.5-1.el9_6

almalinux advisories ALSA-2025:13780ALSA-2025:13782

  • webkit2gtk3 Rocky Linux 9 2.48.5-1.el9_6
  • webkit2gtk3 Rocky Linux 8 2.48.5-1.el8_10

rocky linux advisories RLSA-2025:13782RLSA-2025:13780

  • qt6-qtwebengine Alpine 3.22 6.8.3-r1
  • qt6-qtwebengine Alpine 3.24, Alpine 3.23 6.9.1-r3

alpine advisories ALPINE-CVE-2025-6558

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • qt5-qtbase CBL-Mariner 2.0 5.12.11-18

azure linux advisories AZL-65586

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-6558 updated cvss 8.8

angle: insufficient input validation can cause undefined behavior

  • Red Hat Enterprise Linux 6 webkitgtk
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3 2.48.5-1.el8_10, webkit2gtk3-jsc 2.48.5-1.el8_10
    fixed: vendor fix RHSA-2025:13780
  • Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3 2.48.5-1.el9_6, webkit2gtk3-jsc 2.48.5-1.el9_6
    fixed: vendor fix RHSA-2025:13782
  • Red Hat Enterprise Linux AppStream AUS (v. 8.2) webkit2gtk3 2.48.5-1.el8_2, webkit2gtk3-jsc 2.48.5-1.el8_2
    fixed: vendor fix RHSA-2025:14432
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) webkit2gtk3 2.48.5-1.el8_4, webkit2gtk3-jsc 2.48.5-1.el8_4
    fixed: vendor fix RHSA-2025:14486
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) webkit2gtk3 2.48.5-1.el8_6, webkit2gtk3-jsc 2.48.5-1.el8_6 Red Hat Enterprise Linux AppStream E4S (v.8.6) webkit2gtk3 2.48.5-1.el8_6, webkit2gtk3-jsc 2.48.5-1.el8_6
    fixed: vendor fix RHSA-2025:14433
  • Red Hat Enterprise Linux AppStream E4S (v.8.8) webkit2gtk3 2.48.5-1.el8_8, webkit2gtk3-jsc 2.48.5-1.el8_8
    fixed: vendor fix RHSA-2025:14434
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) webkit2gtk3 2.48.5-1.el9_0, webkit2gtk3-jsc 2.48.5-1.el9_0
    fixed: vendor fix RHSA-2025:14422
show 7 more
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) webkit2gtk3 2.48.5-1.el9_2, webkit2gtk3-jsc 2.48.5-1.el9_2
    fixed: vendor fix RHSA-2025:14421
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) webkit2gtk3 2.48.5-1.el9_4, webkit2gtk3-jsc 2.48.5-1.el9_4
    fixed: vendor fix RHSA-2025:14423
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) webkit2gtk3 2.48.5-1.el8_4, webkit2gtk3-jsc 2.48.5-1.el8_4
    fixed: vendor fix RHSA-2025:14486
  • Red Hat Enterprise Linux AppStream TUS (v.8.6) webkit2gtk3 2.48.5-1.el8_6, webkit2gtk3-jsc 2.48.5-1.el8_6
    fixed: vendor fix RHSA-2025:14433
  • Red Hat Enterprise Linux AppStream TUS (v.8.8) webkit2gtk3 2.48.5-1.el8_8, webkit2gtk3-jsc 2.48.5-1.el8_8
    fixed: vendor fix RHSA-2025:14434
  • Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4 2.48.5-1.el7_9, webkitgtk4-jsc 2.48.5-1.el7_9 Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-doc 2.48.5-1.el7_9, webkitgtk4-devel 2.48.5-1.el7_9, webkitgtk4-debuginfo 2.48.5-1.el7_9, webkitgtk4-jsc-devel 2.48.5-1.el7_9
    fixed: vendor fix RHSA-2025:15729
  • Red Hat Enterprise Linux 7 webkitgtk3, libwebkit2gtk Red Hat Enterprise Linux 8 firefox, mozjs60, thunderbird Red Hat Enterprise Linux 9 firefox, firefox-x11, thunderbird Red Hat Enterprise Linux 10 firefox, thunderbird
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. 0-day patched (Project Zero)
  2. Published
  3. Added to CISA KEV
  4. CISA SSVC: exploitation active
  5. CISA patch deadline

Known exploited

Added
15 mo ago
Patch by
2025-08-12 (14 mo ago)
Ransomware
Not known
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.
Vendor, product
Google, Chromium
CISA name
Google Chromium ANGLE and GPU Improper Input Validation Vulnerability

Zero-day

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Patched
2025-07-15
Details
project zero tracker

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

  • T1189 Drive-by Compromise exploitation
  • T1203 Exploitation for Client Execution exploitation
  • T1456 Drive-By Compromise exploitation, mobile
  • T1658 Exploitation for Client Execution exploitation, mobile
  • T1497 Virtualization/Sandbox Evasion primary impact
  • T1633 Virtualization/Sandbox Evasion primary impact, mobile

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
15 mo ago

Exploit prediction

10.93% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Google Chrome

Classification

Weakness
  • CWE-20 Improper Input Validation
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.