Windows TCP/IP Denial of Service Vulnerability
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Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-05-12. the CNA's CVSS baseline 7.1; sources differ by 0.0.
Windows TCP/IP Denial of Service Vulnerability
May 12, 2026
June 5, 2026
Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40401These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-40401
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.
msrc