PT-2026-58203 · Microsoft · Windows Backup Service

Published 2026-07-14 · Updated 2026-07-15 · CVE-2026-50364

Positive Technologies (AI Summary)

CVSS v3.1

7.3

High

Base vector

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

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

Description An improper link resolution issue before file access, known as link following, allows an authorized attacker to elevate privileges locally. This flaw enables a low-privilege account to obtain administrative permissions.

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

LPE

Link Following

Weakness Enumeration

CWE-59

Related Identifiers

CVE-2026-50364

Affected Products

Windows Backup Service

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-50364 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50364 · Vendor Advisory
• https://twitter.com/windowsforum/status/2077254372015157424 · Twitter Post