PT-2026-2663 · Microsoft · Windows Ldap+1

Published 2026-01-13 · Updated 2026-04-12 · CVE-2026-20812

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:C/A:N

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

Description An issue with how input is checked in Windows Lightweight Directory Access Protocol (LDAP) could allow a network attacker who is already authorized to modify the system. This tampering could affect the system's operation.

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

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2026-00481

CVE-2026-20812

Affected Products

Windows

Windows Ldap

References · 10

• https://bdu.fstec.ru/vul/2026-00481 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-20812 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20812 · Security Note
• https://osv.dev/vulnerability/CVE-2026-20812 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20812 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-20812 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-20812 · Vendor Advisory
• https://twitter.com/CVEnew/status/2012490426767274495 · Twitter Post
• https://cybersecurity-help.cz/vdb/SB20260114100 · Note
• https://twitter.com/3r1k4dl3r/status/2043325640292634707 · Twitter Post