How severe is CVE-2026-3909?

CVE-2026-3909 has a CVSS 3.1 base score of 8.8 (HIGH). EPSS estimates a 2.3% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2026-3909: Google Skia Out-of-Bounds Write Vulnerability

CISA Known Exploited Vulnerabilities

Google Skia Out-of-Bounds Write Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2026-03-13

Remediation due

2026-03-27

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 notes
This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_13.html ; https://nvd.nist.gov/vuln/detail/CVE-2026-3909

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)

Severity

CVSS 3.1 · CISA8.8 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Exploitation Context

as of October 14, 2026

All KEV statistics→

CISA added CVE-2026-3909 to the KEV catalog 1 day after its CVE record was published. The median for entries added in 2026 so far is 15 days.
It is one of 75 Google entries in the CISA KEV catalog, and one of 8 added in 2026.
Its current EPSS score (2.3%) is higher than that of 10% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Google	Google Chrome	146.0.7680.75 to <146.0.7680.75

References

2 Links

Other references

Record Details

Published

2026-03-12

Last updated

2026-03-24

Assigner (CNA)

Chrome

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.