CVE-2025-6554

Google Chromium V8 Type Confusion Vulnerability

  • High 8.1
  • Exploited: added to CISA KEV 2 Jul 2025

Description

Type confusion in V8 in Google Chrome prior to 138.0.7204.96 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: High)

Key facts

Published
30 Jun 2025
Last changed
21 Oct 2025
Assigned by
Chrome
KEV added
2 Jul 2025
KEV fix due
23 Jul 2025
EPSS
14.142% likely to be exploited in the next 30 days, higher than 96.631% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 8.1CVSS 3.1, Highfrom CISA (ADP container)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

What to do

  • Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
GoogleChrome
  • 138.0.7204.96 up to but excluding 138.0.7204.96 (affected)

Timeline

  1. 30 Jun 2025 Published
  2. 2 Jul 2025 CVE-2025-6554 added to CISA KEV
  3. 2 Jul 2025 Added to the CISA KEV catalogue

Weakness

References