CVE-2026-20854

HIGH EPSS 59.8%
Published Jan 13, 20265mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Jan 13, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

Description

Use after free in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to execute code over a network.

CVSS Details

Base Score
7.5
Exploitability
1.6
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
59.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 3

VendorProductVersionRange
microsoftwindows_11_24h2* <10.0.26100.7623
microsoftwindows_11_25h2* <10.0.26200.7623
microsoftwindows_server_2025* <10.0.26100.32230

References 1

  • msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20854
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.