What is CVE-2026-34339?

CVE-2026-34339 is a security advisory published by Microsoft Security Response Center (MSRC) with Denial of Service severity. Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability

Which CVE IDs does CVE-2026-34339 cover?

CVE-2026-34339 covers the following CVE IDs: CVE-2026-34339. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-34339?

CVE-2026-34339 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

CVE-2026-34339Denial of ServiceCVSS 5.5

Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

May 22, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-34339 →

📋 Description

<p>Null pointer dereference in Windows LDAP - Lightweight Directory Access Protocol allows an authorized attacker to deny service locally.</p>