CVE-2026-41089
Windows Netlogon Remote Code Execution Vulnerability
- Published
- May 12, 2026
- Updated
- Aug 10, 2026
- Assigning CNA
- microsoft
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 61.4%
- Model date
- Oct 17, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network.
Sources
CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)
CVE-2026-41089
- CVE-2026-41089-LongLogonDetection
CVE-2026-41089 checker: unauthenticated, non-destructive detection for the Netlogon CLDAP stack buffer overflow (CVSS 9.8). Reports whether a domain controller's domain is long enough to crash, without sending the overflow. The binary-verified analysis the public PoCs got wrong.
Technical analysis and Proof-of-Concept (PoC) for CVE-2026-41089, a critical unauthenticated Remote Code Execution (RCE) vulnerability in the Windows Netlogon service affecting Domain Controllers.
Pre-auth PoC for CVE-2026-41089 Netlogon CLDAP stack overflow via UDP/389, triggering LSASS crash/DC reboot. Includes exploit script, root-cause analysis, detection, and mitigation guidance.
🛡️ Official AI Security Tool diagnostic module for CVE-2026-41089 (Windows Netlogon Stack Buffer Overflow RCE). Features technical writeup, attack architecture, IoCs, and mitigation strategy.
Proof-of-concept exploit for CVE-2026-41089, a Netlogon remote code execution vulnerability in Windows Active Directory environments, for security research and validation.
CVE-2026-41089 LongLogon: pre-auth CLDAP (UDP/389) stack buffer overflow crasher for unpatched Windows Server 2025 Netlogon (lsass 0xc0000409). Stdlib-only Python PoC + lab write-up.
- CVE-2026-41089Exploit
CVE-2026-41089 是 Windows Netlogon 服务中一个关键的远程代码执行漏洞，单包即可崩溃 lsass.exe，导致域控制器在约 30-60 秒内重启。此期间该 DC 的所有域认证将失败。
- CVE-2026-41089-Netlogon-RCEScanner
Scan Windows Domain Controllers for CVE-2026-41089 to detect unauthenticated remote code execution vulnerabilities in the Netlogon service.
Automate Netlogon CVE-2026-41089 validation and defensive testing through integrated AI security workflows, enabling rapid risk assessment and mitigation verification.
Responsible use
Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.