How severe is CVE-2026-3909?

CVE-2026-3909 has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2026-3909?

Affected package information for CVE-2026-3909 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2026-3909?

No fixed version has been published for CVE-2026-3909 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2026-3909 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-3909 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-3909?

CVE-2026-3909 has an EPSS (Exploit Prediction Scoring System) score of 0.5%, placing it in the 64th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

Is CVE-2026-3909 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2026-3909 (Google Skia Out-of-Bounds Write Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-03-13. CISA required all US federal civilian agencies to remediate this vulnerability by 2026-03-27. The required action was: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2026-3909?

CVE-2026-3909 is classified as Out-of-bounds Write (CWE-787). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2026-3909 published, and has it been updated?

CVE-2026-3909 was published on March 13, 2026 and was last updated on March 23, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2026-03-13 — agencies required to remediate by 2026-03-27

CVE-2026-3909

HIGH

Published

Mar 13, 2026

Updated

Mar 23, 2026

Affected

0 pkgs

Patched

None yet

Exploits

None indexed

EPSS Exploitation Probability

via FIRST.org ↗

0.5%probability of exploitation in next 30 days

Lower Risk64th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

Out of bounds write in Skia in Google Chrome prior to 146.0.7680.75 allowed a remote attacker to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: High)

Frequently Asked Questions

Out of bounds write in Skia in Google Chrome prior to 146.0.7680.75 allowed a remote attacker to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: High)

O3 Security · Impact-Aware SCA

Is CVE-2026-3909 in your stack?

O3 detects CVE-2026-3909 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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