CVSS base score: 5.5 (Medium) vendor CNA · v3.1
Score assigned by the vendor's own CVE Numbering Authority (CNA); CISA's Vulnrichment program adds a score only when the CNA omits one.
Microsoft Netlogon Privilege Escalation Vulnerability
Vendor: Microsoft Product: Netlogon
Microsoft's Netlogon Remote Protocol (MS-NRPC) contains a privilege escalation vulnerability when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller. An attacker who successfully exploits the vulnerability could run a specially crafted application on a device on the network. The vulnerability is also known under the moniker of Zerologon.
Each milestone comes from a different source, so gaps between them are gaps in what those sources publish, not evidence that nothing happened. EPSS history for this CVE holds 262 points from 2021-12-11, tracked daily from 2026-09-09; earlier points are weekly, which dates a spike to within a week. Peak probability 99.5% on 2026-06-20.
Check whether a specific version is affected →
What each source publishes about which product versions carry this vulnerability, kept as written rather than merged. Absence here means no source has published applicability data, not that nothing is affected.
No mentions found in monitored research blogs or news feeds.
Coverage across public collections only: Nuclei and OpenVAS NVT (scan);
Snort and Suricata ET Open (network); Sigma and YARA (host/SIEM);
Metasploit, Exploit-DB and public GitHub repositories (exploit). Absence
here means nothing public was found, not that detection is impossible.
GitHub PoC repositories are collected automatically by
PoC-in-GitHub (CC0) and are not vetted:
some are fakes and some are malware. Treat them as evidence that code was
published, not as code to run.
OpenVAS coverage derives from the Greenbone Community Feed, made available
under the Open Database License (ODbL) v1.0;
its individual Vulnerability Tests are licensed
GNU GPL v2.
Netlogon Elevation of Privilege Vulnerability
The vendor's own judgement about their own code, shown alongside CISA's rather than merged into it. The exploitability index is a forward-looking prediction, distinct from a CVSS severity or CISA's SSVC decision, and vendors often report observed exploitation before a CVE reaches the KEV catalog. Vendor advisory →
Where the distribution has shipped a fix, and in which version. Green means the release has resolved it, amber that it is still open. Data from the Debian Security Tracker, used under Debian's MIT / GPLv2+ terms. Debian is upstream of several other distributions, so a fix here often precedes theirs.
| Source | Date | Record |
|---|---|---|
| CISA KEV | 2021-11-03 | source record → |
| CISA Vulnrichment | 2025-02-04 | source record → |
| Date | Advisory | Issuer |
|---|---|---|
| 2025-02-19 | #StopRansomware: Ghost (Cring) Ransomware | CISA |
| 2025-02-19 | #StopRansomware: Ghost (Cring) Ransomware | FBI |
| 2024-11-12 | 2023 Top Routinely Exploited Vulnerabilities | CISA |
| 2024-10-16 | Iranian Cyber Actors’ Brute Force and Credential Access Activity Compromises Critical Infrastructure Organizations | NSA |
| 2024-09-05 | Russian Military Cyber Actors Target US and Global Critical Infrastructure | NSA |
| 2024-09-05 | Russian Military Cyber Actors Target U.S. and Global Critical Infrastructure | NSA |
| 2024-08-29 | #StopRansomware: RansomHub Ransomware | CISA |
| 2024-05-10 | #StopRansomware: Black Basta | CISA |
No exploit-tool sightings recorded for this CVE.
Evidence tiers are explained on the About page — a merged Metasploit module is far stronger evidence than a distro package mention.