PT-2026-2671 · Microsoft · Windows

Published 2026-01-13 · Updated 2026-01-17 · CVE-2026-20821

Positive Technologies (AI Summary)

CVSS v3.1

6.2

Medium

Base vector

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

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

Description A flaw exists in Windows Remote Procedure Call that could allow an unauthorized attacker to disclose information locally. This issue enables attackers to obtain sensitive information and potentially affect the system.

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

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

BDU:2026-00572

CVE-2026-20821

Affected Products

Windows

References · 7

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-20821 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00572 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20821 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20821 · Security Note
• https://osv.dev/vulnerability/CVE-2026-20821 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20821 · Security Note
• https://twitter.com/CVEnew/status/2012490419783733491 · Twitter Post