CVE-2025-6554
Google Chromium V8 Type Confusion Vulnerability
- Published
- Jun 30, 2025
- Updated
- Oct 21, 2025
- Assigning CNA
- Chrome
- Evidence observed
- Jul 2, 2025
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:NModerate · next 30 days
- Percentile
- 96.1%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
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)
Sources
9- PoCPoC
Curated proof-of-concept exploits for real-world CVEs affecting iOS, macOS, Chrome Renderer, and Steam clients, with version-specific targets and technical write-up references.
Proof-of-concept exploit for a V8 JavaScript engine vulnerability (CVE-2025-6554) demonstrating a TDZ bypass that leaks 'The Hole' sentinel, enabling type confusion and potential memory corruption.
- CVE-2025-6554Exploit
Proof-of-concept exploit for CVE-2025-6554, demonstrating V8 sandbox escape via addressof and fakeobj primitives to achieve arbitrary read/write. Includes reproduction steps and references for educational analysis.
Responsible use
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