PT-2026-2698 · Microsoft · Windows Shell+1

Published 2026-01-13 · Updated 2026-01-15 · CVE-2026-20852

Positive Technologies (AI Summary)

CVSS v3.1

7.7

High

Base vector

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

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

Description A flaw in Windows Hello’s privilege assignment allows a local attacker to perform tampering on the system. This issue could allow unauthorized access and manipulation of the system.

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

Incorrect Privilege Assignment

Weakness Enumeration

CWE-266

Related Identifiers

BDU:2026-00434

CVE-2026-20852

Affected Products

Windows

Windows Shell

References · 7

• https://osv.dev/vulnerability/CVE-2026-20852 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-20852 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20852 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20852 · Security Note
• https://bdu.fstec.ru/vul/2026-00434 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-20852 · Security Note
• https://twitter.com/CVEnew/status/2011759670956814669 · Twitter Post