CVE-2026-3909: Technical Deep-Dive (Auto Refreshed)

Generated on 2026-03-21T14:22:47.339Z. This file is automatically regenerated every 30 minutes by the CVE AI enrichment job using web sources (NVD, MITRE, CISA KEV, GitHub).

Executive Technical Summary

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)

• Context preserved from previous revision: 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) 1. Use only isolated environments and assets you own or are explicitly authorized to test.

Technical Details

• CVE: CVE-2026-3909
• KEV date added: 2026-03-13
• KEV due date: 2026-03-27
• NVD published: 2026-03-13
• NVD modified: 2026-03-13
• MITRE modified: 2026-03-14
• CVSS base score: 8.8
• CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
• CVSS exploitability score: 2.8
• CVSS impact score: 5.9
• Attack vector: Network
• Attack complexity: Low
• Privileges required: None
• User interaction: Required
• Scope: Unchanged
• Confidentiality impact: High
• Integrity impact: High
• Availability impact: High

Versions and Products Impacted

• google / chrome (versions: < 146.0.7680.75)
• Google / Chrome (versions: 146.0.7680.75)

Weakness Classification

• CWE-787

Repositories for Lab Validation (Public Examples)

• w4zu/Debian_security | stars: 0 | updated: 2026-03-21 | https://github.com/w4zu/Debian_security
  Notes: DSA and DLA for Debian last 14 days

People and Organizations Mentioned

• Chrome
• Google
• Skia
• w4zu

Practical Defensive Validation (Authorized Only)

1. Use only isolated environments and systems you own or are explicitly authorized to test.
2. Snapshot infrastructure before validation and preserve baseline logs (EDR, SIEM, OS, app).
3. Inventory google / chrome (versions: < 146.0.7680.75) assets and confirm exact vulnerable versions with automated checks.
4. Patch in staged environments and validate closure with scanners + service health checks.
5. Map detections to MITRE ATT&CK tactics relevant to your environment and tune alert quality.

References

• NVD record: https://nvd.nist.gov/vuln/detail/CVE-2026-3909
• MITRE CVE record: https://www.cve.org/CVERecord?id=CVE-2026-3909
• CISA KEV Catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• CISA KEV JSON feed: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
• KEV 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_12.html#:~:text=Google%20is%20aware ; https://nvd.nist.gov/vuln/detail/CVE-2026-3909
• https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_12.html
• https://issues.chromium.org/issues/491421267
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3909
• Repository example: https://github.com/w4zu/Debian_security

This content is for defensive security training and authorized validation only.