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VulnerabilityPublished Updated

CVE-2025-8576: Google Chrome · Use After Free

Affects Google ChromeSource CVE Database V5

0

Not known to be exploited · CVSS 8.8 High.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 24% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Aug 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Google ChromeAffected
  • =139.0.7258.66
Fixed in–

AI-suggested

To mitigate CVE-2025-8576, organizations should immediately update Google Chrome to version 139.0.7258.66 or later, where the vulnerability is patched. Beyond patching, organizations should enforce strict extension policies, allowing only vetted and necessary extensions through enterprise management tools or group policies. Employing application whitelisting for extensions can prevent installation of malicious or unapproved extensions. User education is critical to reduce the risk of social engineering attacks that might trick users into installing harmful extensions. Monitoring browser behavior for anomalies, such as unexpected extension activity or crashes, can help detect exploitation attempts. Network-level protections, including web filtering and endpoint detection and response (EDR) solutions, can provide additional layers of defense. Regular vulnerability scanning and threat intelligence updates should be integrated into security operations to stay ahead of emerging threats related to browser vulnerabilities.

Description

Use after free in Extensions in Google Chrome prior to 139.0.7258.66 allowed a remote attacker to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security severity: Medium)

References

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