PT-2026-40161 · Microsoft · Windows Print Spooler+1

Published 2026-05-12 · Updated 2026-05-12 · CVE-2026-34342

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

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

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

Description An improper synchronization issue, known as a race condition (a situation where the system's behavior depends on the sequence or timing of uncontrollable events), occurs during concurrent execution using a shared resource in Windows Print Spooler Components. This allows an authorized attacker to elevate privileges locally.

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

LPE

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

BDU:2026-06600

CVE-2026-34342

ZDI-26-310

Affected Products

Windows

Windows Print Spooler

References · 7

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34342 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-26-310 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-34342 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-06600 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-34342 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-34342 · Security Note
• https://twitter.com/windowsforum/status/2054265255052616151 · Twitter Post