CVE-2025-47981
SPNEGO Extended Negotiation (NEGOEX) Security Mechanism Remote Code Execution Vulnerability
- Published
- Jul 8, 2025
- Updated
- Feb 13, 2026
- Assigning CNA
- microsoft
- Evidence observed
- Sep 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:HModerate · next 30 days
- Percentile
- 98.3%
- Model date
- Sep 21, 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
Heap-based buffer overflow in Windows SPNEGO Extended Negotiation allows an unauthorized attacker to execute code over a network.
Sources
1- CVE-2025-47981Detection
PowerShell assessment script that checks Windows systems for CVE-2025-47981 (SPNEGO NEGOEX heap overflow) by verifying kernel version, PKU2U registry key, and exposed SPNEGO ports. Provides remediation steps and detection guidance.
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.