PT-2026-58189 · Microsoft · Windows Key Guard

Published 2026-07-14 · Updated 2026-07-15 · CVE-2026-50303

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions Windows Key Guard (affected versions not specified)

Description A risky implementation of a cryptographic primitive in Windows Key Guard allows an authorized local attacker to bypass a security feature and expose secrets.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-1240

Related Identifiers

CVE-2026-50303

Affected Products

Windows Key Guard

References · 5

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-50303 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50303 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-50303 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-50303 · Vendor Advisory
• https://twitter.com/windowsforum/status/2077253867230679468 · Twitter Post