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CVE-2025-5419: Google Chromium V8 Out-of-Bounds Read and Write Vulnerability

criticalknown exploitedpublic exploitCVE-2025-5419
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Google Chromium V8 contains an out-of-bounds read and write vulnerability that could allow a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

CSIRTS triage

vendor: Googleproduct: Chromium V8Memory corruption
What
An out-of-bounds read and write vulnerability could allow heap corruption via a crafted HTML page.
Who is affected
Users of web browsers utilizing Chromium are affected.
Urgency
Immediate action is required due to the critical nature of the vulnerability and successful exploitation.
Action
Update to the latest version of affected browsers.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2025-06-05
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-5419

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2025-5419coverage & exploitation statusNVD · CVE.org

Recent advisories for Google Chromium

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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