Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Microsoft Windows DNS Server on Windows 10 Version 1607 and 1809, Windows Server 2012, 2012 R2, 2016 and 2019 (including Server Core installations) is affected in the builds listed before the fixed versions. A race condition in DNS Server lets an unauthenticated attacker run code over the network. Upgrade to Windows build 10.0.14393.9512, 10.0.17763.9245, 6.2.9200.26349 or 6.3.9600.23398 as applicable to the installed release.
Not analysed yet
We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.1 | High | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C | CNA (microsoft) |
- CISA KEV Not listed.
- EPSS 0.0054, the 46th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 8 Sept 2026, 17:10 UTC Confirmed by the CVE List
- 31 Oct 2026, 16:20 UTC First seen by agentprime