CVE-2026-40405 in microsoft windows 11 24h2
LogPulse has a published detection rule for this CVE: it raises a notable when someone tries to exploit it.
What the vulnerability is
Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over a network.
Affected software: microsoft windows 11 24h2, microsoft windows 11 25h2, microsoft windows 11 26h1, microsoft windows server 2025
Scores
- CVSS: 7.5 (high)
- EPSS: 1.08% chance of exploitation in the next 30 days
- CISA KEV: Not listed
- Published: 2026-05-12
What LogPulse has for it
- Detection rule: Yes, published
- Agent check (vulnerable version): No
- Mitigation: No
Source data: NIST NVD, CISA KEV and FIRST EPSS. LogPulse processes new CVEs every hour.
We build every detection with great care, but no two environments are the same. Log sources, parsing and configuration differ, so test a detection in your own environment before you rely on it.