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CVE-2026-3910

CISA KEV

Published March 13, 2026 · Updated April 3, 2026

high

What This Means

## CVE-2026-3910: Chromium V8 Out-of-Bounds Memory Access **What it is:** Google Chromium V8 fails to properly validate memory buffer boundaries, allowing an attacker to read or write outside intended memory regions through a malicious HTML page. **Impact:** A remote attacker can execute arbitrary code within the V8 sandbox via crafted JavaScript, potentially breaking out to the host system depending on sandbox escape chains. This affects Chrome, Edge, Opera, and any browser using Chromium. **Required action:** Patch immediately when Google releases V8 updates. Monitor for public exploits and PoCs. Block untrusted HTML content at network boundaries where possible. Check your browser deployment versions against Google's security advisories and deploy patches across your organization within 24–48 hours of release.

Official Description+

Google Chromium V8 contains an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow a remote attacker to execute arbitrary code inside a sandbox 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.

Affected Products

VendorProduct
GoogleChromium V8

Patch Status

Patch by 2026-03-27

Recommended Actions

  1. Check if your systems use any of the affected products listed above.
  2. Apply vendor patches immediately if available.
  3. This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
  4. Monitor vendor advisories for updates and additional mitigations.
  5. Review logs for indicators of compromise related to CVE-2026-3910.

Related Coverage

Vvulnerability

CVE-2026-3910: Google Chromium V8 Out-of-Bounds Memory Flaw Enables Remote Code Execution via Malicious HTML

CVE-2026-3910 is an out-of-bounds memory buffer vulnerability in Google's Chromium V8 JavaScript engine that allows a remote attacker to execute arbitrary code within the V8 sandbox via a crafted HTML page. The flaw affects all Chromium-based browsers including Google Chrome, Microsoft Edge, and Opera. CISA requires federal agencies to patch by March 27, 2026, and all organizations should deploy updates within 24 to 48 hours of vendor release.

CISA KEV·21d ago·3 min read