How severe is CVE-2025-26651?

CVE-2025-26651 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-26651 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-26651?

CVE-2025-26651 primarily affects Microsoft Windows 11 22h2. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-26651?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-26651 have an EU (EUVD) identifier?

Yes. CVE-2025-26651 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-10226.

When was CVE-2025-26651 published?

CVE-2025-26651 was published on 2025-04-08 and last updated on 2026-06-17.

CVE-2025-26651

CVE-2025-26651 is a medium-severity vulnerability in Microsoft Windows 11 22h2 with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-749.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-10226
Weakness: CWE-749
Affected product: Microsoft Windows 11 22h2
Published: 2025-04-08
Last modified: 2026-06-17

Description

Exposed dangerous method or function in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.

Frequently asked questions

What is CVE-2025-26651?: Exposed dangerous method or function in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.
How severe is CVE-2025-26651?: CVE-2025-26651 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-26651 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-26651?: CVE-2025-26651 primarily affects Microsoft Windows 11 22h2. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-26651?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-26651 have an EU (EUVD) identifier?: Yes. CVE-2025-26651 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-10226.
When was CVE-2025-26651 published?: CVE-2025-26651 was published on 2025-04-08 and last updated on 2026-06-17.

References

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

Affected products (6)

cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*

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