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Public proof of conceptFix available

CVE-2025-9478

A public proof of concept exists; no exploitation attested.

  • Published2025-08-26
  • Fixed in139.0.7258.154
  • WeaknessCWE-416

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Use after free in ANGLE in Google Chrome prior to 139.0.7258.154 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Critical)

Timeline

dates in UTC
  1. 2025-08-2619:15CVE publishedNVD

Versions per branch

NVD
Google chromeversion to verify
BranchAffectedFixed in
139.0< 139.0.7258.154139.0.7258.154

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As Chrome, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Google Chrome
    Affected
    • ≥ 139.0.7258.154, < 139.0.7258.154fixed in 139.0.7258.154custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-08-26

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • chromiumWolfiall versions · fixed in 139.0.7258.154-r0
  • chromiumopenSUSE:Tumbleweedall versions · fixed in 139.0.7258.154-1.1
  • chromiumDebian:14all versions · fixed in 139.0.7258.154-1
  • chromiumDebian:13all versions · fixed in 139.0.7258.154-1~deb13u1
  • chromiumDebian:12all versions · fixed in 139.0.7258.154-1~deb12u1
  • chromiumChainguardall versions · fixed in 139.0.7258.154-r0
  • webkit2gtkEchoall versions · fixed in 2.54.0-1~deb13u1
  • webkit2gtkDebian:14all versions · no fixed version listed

27 more package ranges on OSV.dev

Vendor advisories

  • CVE-2025-9478 Red Hat Product Security371 products fixed · 4 known affected

    chromium-browser: angle: Use after free in ANGLE

    webkitgtk as a component of Red Hat Enterprise Linux 6 · webkitgtk-devel as a component of Red Hat Enterprise Linux 6 · webkitgtk-doc as a component of Red Hat Enterprise Linux 6 · +1 more

  • RHSA-2026:93435 Red Hat Product Security47 products fixed

    Red Hat Security Advisory: webkit2gtk3 security update

  • RHSA-2026:92339 Red Hat Product Security38 products fixed

    Red Hat Security Advisory: webkit2gtk3 security update

  • RHSA-2026:92216 Red Hat Product Security46 products fixed

    Red Hat Security Advisory: webkit2gtk3 security update

  • RHSA-2026:91631 Red Hat Product Security18 products fixed

    Red Hat Security Advisory: webkitgtk4 security update

  • RHSA-2026:89822 Red Hat Product Security46 products fixed

    Red Hat Security Advisory: webkit2gtk3 security update

3 more advisories

Full record on NVD

Fix

  1. Update Google chrome to 139.0.7258.154
  2. Vendor fix Red Hat Product Security RHSA-2026:93435 · 47 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  3. No fix planned, says the vendor Red Hat Product Security CVE-2025-9478 · 4 productsOut of support scope

Advisories and patches

Detection

read 2026-11-01 01:02 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2025-08-26
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-q376-jh5m-v6wp

Frequently asked questions

What is CVE-2025-9478?

Use after free in ANGLE in Google Chrome prior to 139.0.7258.154 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Critical)

Is CVE-2025-9478 actively exploited?

Active exploitation of CVE-2025-9478 has not been confirmed. Its EPSS score was 7.4% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-9478?

CVE-2025-9478 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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Sources for this record