Google Chromium V8 Out-of-Bounds Read and Write Vulnerability
Google — Chrome
Out of bounds read and write in V8 in Google Chrome prior to 137.0.7151.68 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
8.8
6.5%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published
- Jun 2, 2025
- Modified
- Feb 26, 2026
- Added to KEV
- Jun 5, 2025
- Federal patch due
- Jun 26, 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
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2025-5419, 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.
No public GitHub repositories referencing CVE-2025-5419 were found at last check. Absence here is not proof no exploit exists - see the references below for vendor advisories and write-ups.
References
Frequently asked questions
What is CVE-2025-5419?
Out of bounds read and write in V8 in Google Chrome prior to 137.0.7151.68 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
How severe is CVE-2025-5419?
CVE-2025-5419 has a CVSS base score of 8.8 out of 10 (CVSS 3.1).
Is CVE-2025-5419 actively exploited in the wild?
Yes. CVE-2025-5419 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Jun 5, 2025, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2025-5419?
6.5% - meaning FIRST.org's EPSS model estimates a 6.5% probability this vulnerability will be exploited in the wild within 30 days (93% percentile among all scored CVEs).
What type of vulnerability is CVE-2025-5419?
CVE-2025-5419 is classified under CWE-125, CWE-787 (CWE-125 Out-of-bounds Read).
Cross-checked against
Impactr finds and proves whether CVE-2025-5419 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.
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