PT-2026-58473 · Microsoft · Windows Print Spooler+1

CVE-2026-50499 · Published 2026-07-14 · Updated 2026-07-15

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description A heap-based buffer overflow exists in Windows Print Spooler components. This flaw allows an authorized attacker to elevate privileges locally. A heap-based buffer overflow occurs when a program writes more data to a heap memory buffer than it can hold, potentially leading to memory corruption.

Recommendations Apply the security updates released in July.

Fix

DoS

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

BDU:2026-09943

CVE-2026-50499

Affected Products

Windows

Windows Print Spooler

References · 6

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-50499 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50499 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-09943 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-50499 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-50499 · Security Note
• https://twitter.com/windowsforum/status/2077366610365493600 · Twitter Post