CVE-2026-41089: Windows Netlogon Remote Code Execution Vulnerability
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network.
Description quoted from the CVE record (assigned by microsoft, published 2026-05-12).
Weakness: CWE-121: Stack-based Buffer Overflow
How it can be exploited
Exploitable over the network with low attack complexity needing no privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. 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
CISA assessment (SSVC): CISA has no evidence of exploitation. Automatable: yes. Technical impact: total.
Public exploit evidence (Exploit Observer)
Also known as: BDU:2026-06756, EUVD-2026-29681, GHSA-7j2c-v44v-wc8f
VEDAS cluster: VEDAS:GAUNTLETGULL
Exploit Observer links 40 pieces of public exploit code or detection modules that name this CVE or one of its aliases.
Exploit code and modules (40)
Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.
- Code repository: https://github.com/0xabcd01/cve-2026-41089
- Code repository: https://github.com/0xblackash/cve-2026-41089
- Code repository: https://github.com/1posix/cve-2026-41089-poc
- Code repository: https://github.com/adscanpro/cve-2026-41089-longlogon
- Code repository: https://github.com/coasttruvitalize/cve-2026-41089-latest
- Code repository: https://github.com/crimsonkingfisher/cve-2026-41089-245
- Code repository: https://github.com/crowevaluate/cve-2026-41089-646
- Code repository: https://github.com/darkuoremember32/cve-2026-41089-470
- Code repository: https://github.com/darkuoremember32/cve-2026-41089-532
- Code repository: https://github.com/flintwayrage/cve-2026-41089-310
- Code repository: https://github.com/fuchsiafromcurl/cve-2026-41089-274
- Code repository: https://github.com/galleryjoiner/cve-2026-41089-686
- and 28 more
Vulnerability databases and vendor advisories (5)
Catalogue entries, not exploit evidence.
- Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2026-29681
- Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-7j2c-v44v-wc8f
- Vulnerability database or vendor advisory: https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-41089
- Vulnerability database or vendor advisory: https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-41089)
- Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-41089
6 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.
VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.
Live scores
- EPSS
- 0.796
very likely to be attacked soon - VEDAS
- 0.977
strong exploit evidence - On CISA KEV
- Not listed
- Detection rule
- None yet
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| Microsoft Windows Server 2012 | from 6.2.9200.0 before 6.2.9200.26079 | Not stated |
| Microsoft Windows Server 2012 (Server Core installation) | from 6.2.9200.0 before 6.2.9200.26079 | Not stated |
| Microsoft Windows Server 2012 R2 | from 6.3.9600.0 before 6.3.9600.23181 | Not stated |
| Microsoft Windows Server 2012 R2 (Server Core installation) | from 6.3.9600.0 before 6.3.9600.23181 | Not stated |
| Microsoft Windows Server 2016 | from 10.0.14393.0 before 10.0.14393.9140 | Not stated |
| Microsoft Windows Server 2016 (Server Core installation) | from 10.0.14393.0 before 10.0.14393.9140 | Not stated |
| Microsoft Windows Server 2019 | from 10.0.17763.0 before 10.0.17763.8755 | Not stated |
| Microsoft Windows Server 2019 (Server Core installation) | from 10.0.17763.0 before 10.0.17763.8755 | Not stated |
| Microsoft Windows Server 2022 | from 10.0.20348.0 before 10.0.20348.5139 | Not stated |
| Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) | from 10.0.25398.0 before 10.0.25398.2330 | Not stated |
| Microsoft Windows Server 2025 | from 10.0.26100.0 before 10.0.26100.32860 | Not stated |
| Microsoft Windows Server 2025 (Server Core installation) | from 10.0.26100.0 before 10.0.26100.32860 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
Exploit Observer also maps it to: microsoft windows_server_2012, microsoft windows_server_2016, microsoft windows_server_2019, microsoft windows_server_2022, microsoft windows_server_2022_23h2, microsoft windows_server_2025, microsoft_corp windows_server_2012, microsoft_corp windows_server_2012_(server_core_installation), microsoft_corp windows_server_2012_r2, microsoft_corp windows_server_2012_r2_(server_core_installation).
How to fix it
Fixed versions stated in the CVE record: 6.2.9200.26079, 6.3.9600.23181, 10.0.14393.9140, 10.0.17763.8755, 10.0.20348.5139, 10.0.25398.2330, 10.0.26100.32860.
Vendor guidance:
- Windows Netlogon Remote Code Execution Vulnerability (vendor-advisory, patch)
How to detect it
There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.
Advisories on this CVE
References
Vendor advisories and patches
- Windows Netlogon Remote Code Execution Vulnerability (vendor-advisory, patch)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.