Vulnerability · Published Jan 13, 2026 · Assigned by microsoft

CVE-2026-0386Windows Deployment Services Remote Code Execution Vulnerability

High 7.5

In plain English

A high-severity improper access control in Windows Server 2008 R2 Service Pack 1 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 53.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Improper access control in Windows Deployment Services allows an unauthorized attacker to execute code over an adjacent network.

Affected products (as reported)

VendorProductVersions
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 – before 6.1.7601.28117
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 – before 6.1.7601.28117
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – before 6.0.6003.23717
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 – before 6.0.6003.23717
Microsoft Windows Server 2012 6.2.9200.0 – before 6.2.9200.25868
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – before 6.2.9200.25868
Microsoft Windows Server 2012 R2 6.3.9600.0 – before 6.3.9600.22968
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – before 6.3.9600.22968
Microsoft Windows Server 2016 10.0.14393.0 – before 10.0.14393.8783
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – before 10.0.14393.8783
Microsoft Windows Server 2019 10.0.17763.0 – before 10.0.17763.8276
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – before 10.0.17763.8276
Microsoft Windows Server 2022 10.0.20348.0 – before 10.0.20348.4648
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 – before 10.0.25398.2092
Microsoft Windows Server 2025 10.0.26100.0 – before 10.0.26100.32230
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 – before 10.0.26100.32230

Weakness: CWE-284 · Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

References