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CVE-2025-9479VulnerabilityPublished

V8 · Out-of-bounds Read

Source GCVE Database

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Authoritative record:CVE-2025-9479· Medium 4.3

Not known to be exploited · CVSS 4.3 Medium.

Data as of 13 Nov 2026, 18:44 UTC

CVSS 3.1 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.14.3
Affects
Google Chrome prior to 133.0.6943.141
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Nov 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 13 Nov 2026.

What to do

AI-suggested

Until a fix is available, users should exercise caution when visiting untrusted websites and avoid opening suspicious HTML content. Monitor official Google Chrome security advisories for updates and apply patches promptly once released.

Description

An out-of-bounds read vulnerability exists in the V8 JavaScript engine used by Google Chrome versions prior to 133.0.6943.141. This flaw could allow a remote attacker to cause heap corruption by crafting a malicious HTML page. The vulnerability has a high severity rating with a CVSS score of 8.8.

References

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