Google Chromium V8 Type Confusion Vulnerability
Google — Chrome
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)
8.1
12.7%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- Published
- Jun 30, 2025
- Modified
- Jun 17, 2026
- Added to KEV
- Jul 2, 2025
- Federal patch due
- Jul 23, 2025
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weakness classification
Affected packages
Proof-of-concept & exploitation references
8 foundWeaponization
Public repositories whose name or description references CVE-2025-6554, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
- mistymntncop/CVE-2025-6554★ 45
updated Sep 2, 2026
- aklnjakln/CVE-2025-6554★ 31
updated Jul 13, 2026
- Muhammednihalmp/Google-chrome-zero-day★ 12
CVE-2025-6554
updated Aug 10, 2026
- jopraveen/CVE-2025-6554★ 5
poc for CVE-2025-6554
updated Apr 6, 2026
- PwnToday/CVE-2025-6554★ 2
updated Nov 25, 2025
- gmh5225/CVE-2025-6554-2★ 2
updated Jul 22, 2025
- ghostn4444/POC-CVE-2025-6554★ 1
updated Jul 25, 2025
- LordBheem/CVE-2025-6554★ 0
CVE-2025-6554 PoC
updated Jul 10, 2025
References
Frequently asked questions
What is CVE-2025-6554?
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)
How severe is CVE-2025-6554?
CVE-2025-6554 has a CVSS base score of 8.1 out of 10 (CVSS 3.1).
Is CVE-2025-6554 actively exploited in the wild?
Yes. CVE-2025-6554 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Jul 2, 2025, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2025-6554?
12.7% - meaning FIRST.org's EPSS model estimates a 12.7% probability this vulnerability will be exploited in the wild within 30 days (96% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2025-6554?
We found 8 public GitHub repositories referencing CVE-2025-6554, though none matched a known Nuclei template or Metasploit module at last check. Review each one before relying on it - see the proof-of-concept section above.
What type of vulnerability is CVE-2025-6554?
CVE-2025-6554 is classified under CWE-843 (Type Confusion).
Cross-checked against
Impactr finds and proves whether CVE-2025-6554 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.
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