Denial of service in Microsoft Windows Local Session Manager (LSM)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2025-26651
CWE-ID CWE-749
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Windows Server
Operating systems & Components / Operating system

Windows
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Exposed dangerous method or function

EUVDB-ID: #VU107242

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-26651

CWE-ID: CWE-749 - Exposed Dangerous Method or Function

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the exposure of a dangerous function in Windows Local Session Manager (LSM). A remote user can cause a denial of service condition on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows Server: 2012 R2 6.3.9600.21871 - 2025 10.0.26100.3476

Windows: 10 1607 10.0.14393.10 - 11 24H2 10.0.26100.3476

CPE2.3 External links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26651


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



###SIDEBAR###