Vulnerability · Published May 12, 2026 · Assigned by microsoft
CVE-2026-41089Windows Netlogon Remote Code Execution Vulnerability
Critical 9.8
In plain English
A critical-severity stack buffer overflow in Windows Server 2012 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 79.6% (higher than 99.6% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)79.6%top 0.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network.
Affected products (as reported)
Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Windows Netlogon Remote Code Execution Vulnerability vendor-advisory, patch