Exploited· due 2025-06-26

CVE-2025-5419

Google Chromium V8

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.

Exploitation status

CISA has confirmed this is being exploited in the wild. That is an observation of real attacks, not a prediction.
US federal civilian agencies are required to remediate it by 2025-06-26. That deadline does not bind private companies, but it is a reasonable benchmark for how urgently CISA views it.

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.

CISA’s wording, unedited.

Scoring

CVSS: Not yet scored

Dates

Published: 2025-06-05
Added to KEV: 2025-06-05
Remediation due: 2025-06-26
Sources: CISA KEV