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VulnerabilityPublished Updated

CVE-2025-13639: Google Chrome · Inappropriate Implementation

Affects Google ChromeSource CVE Database V5

0

Not known to be exploited · CVSS 8.1 High : upgrade to 143.0.7499.41 soon.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
8.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 143.0.7499.41
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Dec 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

Upgrade Google Chrome to 143.0.7499.41.

Affected software

ProductAffectedFixed in
Google ChromeAffected
  • =143.0.7499.41
  • <143.0.7499.41
Fixed in
  • 143.0.7499.41

AI-suggested

  1. Immediately update all Google Chrome installations to version 143.0.7499.41 or later, as this version contains the fix for CVE-2025-13639.
  2. Implement strict Content Security Policies (CSP) on internal web applications to reduce the risk of malicious script execution.
  3. Educate users about the risks of clicking unknown or suspicious links, especially those received via email or messaging platforms.
  4. Employ browser security extensions or endpoint protection solutions that can detect and block malicious web content or scripts.
  5. Monitor network traffic for unusual outbound connections or data exfiltration attempts that could indicate exploitation.
  6. Conduct regular security audits and penetration testing focused on web browser security and WebRTC usage.
  7. For organizations with high security requirements, consider restricting WebRTC usage via browser policies or extensions until the patch is applied.
  8. Maintain an inventory of browser versions in use across the organization to ensure timely updates and compliance.

Description

Inappropriate implementation in WebRTC in Google Chrome prior to 143.0.7499.41 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: Low)

References

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