Windows Active Directory Domain Services Remote Code Execution Vulnerability

published 2026-06-09 5 mo ago modified 2026-09-24 45 d ago also EUVD-2026-35692

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

Stack-based buffer overflow in Active Directory Domain Services allows an authorized attacker to execute code over a network.

Patch / fix

fixed in 3 links 1

Microsoft Windows Server 2022 10.0.20348.5256
Microsoft Windows Server 2025 10.0.26100.32995
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.32995

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45648 advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 5 mo ago (2026-06-05)

Exploit prediction

1.12% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Microsoft Windows Server 2022
Microsoft Windows Server 2025
Microsoft Windows Server 2025 (Server Core installation)

Classification

Weakness

CWE-121 Stack-based Buffer Overflow

References

msrc.microsoft.com /update-guide/vulnerability/CVE-2026-45648
vendor-advisory, patch

Sources

CVE List CVE-2026-45648
NVD CVE-2026-45648

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary