CVE-2026-55144

high Microsoft
CVSS v3 Base Score
7.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
EPSS Score
0.2%
Exploitation probability in 30 days
Top 94% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
None
Published: July 14, 2026 (54 days ago)
Last Modified: July 21, 2026
Vendor: Microsoft
Source: MITRE

Description

Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.

CWE

CWE-325

Affected Products

Microsoft Windows 11 Version 24H2Microsoft Windows 11 Version 25H2Microsoft Windows 11 version 26H1Microsoft Windows Server 2022Microsoft Windows Server 2025Microsoft Windows Server 2025 (Server Core installation)

References

🔗 msrc.microsoft.com