- 6.5MediumCVSS base score
- 1.1%Exploitation in 30 daysEPSS · top 33% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Null pointer dereference in Active Directory Domain Services allows an authorized attacker to deny service over a network.
Timeline
ID reserved
By microsoft
- 40 days later
· 40 days later
Published
- 4 months later
· 4 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C |
| NVDNVD · Analyzed | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.1% · top 33% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Affected products
Microsoft · Windows 10 Version 1607
- affected 10.0.14393.0 – < 10.0.14393.9339
Microsoft · Windows 10 Version 1809
- affected 10.0.17763.0 – < 10.0.17763.9020
Microsoft · Windows 10 Version 21H2
- affected 10.0.19044.0 – < 10.0.19044.7548
Microsoft · Windows 10 Version 22H2
- affected 10.0.19045.0 – < 10.0.19045.7548
Microsoft · Windows 11 Version 24H2
- affected 10.0.26100.0 – < 10.0.26100.8875
Microsoft · Windows 11 Version 25H2
- affected 10.0.26200.0 – < 10.0.26200.8875
Microsoft · Windows 11 version 26H1
- affected 10.0.28000.0 – < 10.0.28000.2525
Microsoft · Windows Server 2012
- affected 6.2.9200.0 – < 6.2.9200.26226
Microsoft · Windows Server 2012 (Server Core installation)
- affected 6.2.9200.0 – < 6.2.9200.26226
Microsoft · Windows Server 2012 R2
- affected 6.3.9600.0 – < 6.3.9600.23291
Microsoft · Windows Server 2012 R2 (Server Core installation)
- affected 6.3.9600.0 – < 6.3.9600.23291
Microsoft · Windows Server 2016
- affected 10.0.14393.0 – < 10.0.14393.9339
Microsoft · Windows Server 2016 (Server Core installation)
- affected 10.0.14393.0 – < 10.0.14393.9339
Microsoft · Windows Server 2019
- affected 10.0.17763.0 – < 10.0.17763.9020
Microsoft · Windows Server 2019 (Server Core installation)
- affected 10.0.17763.0 – < 10.0.17763.9020
Microsoft · Windows Server 2022
- affected 10.0.20348.0 – < 10.0.20348.5386
Microsoft · Windows Server 2025
- affected 10.0.26100.0 – < 10.0.26100.33158
Microsoft · Windows Server 2025 (Server Core installation)
- affected 10.0.26100.0 – < 10.0.26100.33158
References
1
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-43903 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-50366)Record last updated .