CVE-2026-79078

FedCM Use‑After‑Free Enables Remote Code Execution in Chrome

View on CVE.org
Published Aug 25, 2026 CVSS 3.1 · 9.6 Critical EPSS < 1% KEV · Not listed
Description
Use after free in FedCM in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)

Analysis

AI-generated

Technical impact

This vulnerability is a use‑after‑free flaw in the Federated Credential Management (FedCM) API of Google Chrome. A crafted HTML page may trigger a memory corruption that allows a remote attacker to execute arbitrary code outside the browser sandbox. The flaw is rated high in Chromium’s internal severity, indicating that a successful exploitation could compromise system confidentiality and integrity.

Affected Systems

Google Chrome versions released before 152.0.7977.65 contain the affected FedCM implementation. Users of the stable channel of Chrome prior to that build are impacted.

Risk and Exploitability

The EPSS score is not available, and the vulnerability is not listed in CISA’s KEV catalog. The CVSS score of 9.6 indicates a critical severity, which aligns with the high internal severity assessment. The likely attack vector is a social‑engineering attack that delivers a malicious web page to a user. An attacker who succeeds in exploiting the use‑after‑free can bypass the browser sandbox and run code with the privileges of the browser process.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Install Chrome update 152.0.7977.65 or later to remove the vulnerable FedCM implementation.
  • If an update cannot be applied immediately, disable the FedCM feature through Chrome policies or by blocking load of federated credential pages on untrusted sites.
  • Continue to rely on Chrome’s sandbox and Safe Browsing features as a secondary defense until the patch is installed.

Generated by OpenCVE AI on August 26, 2026 at 02:44 UTC.

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Debian DLA Debian DLA DLA-4771-1 chromium security update
Debian DSA Debian DSA DSA-6482-1 chromium security update
History
Type Values Removed Values Added
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Title FedCM Use‑After‑Free Enables Remote Code Execution in Chrome
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}
Type Values Removed Values Added
Description Use after free in FedCM in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
Weaknesses CWE-416
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Aug 27, 2026, 3:55 AM
Reserved
Aug 25, 2026, 6:08 AM

View source JSON

Updated
Aug 26, 2026, 12:19 AM

JSON

Status
Analyzed
Published
Aug 25, 2026, 9:18 PM
Modified
Aug 27, 2026, 4:17 AM

View source JSON

No data.

Updated
Aug 26, 2026, 4:00 AM

JSON