← Vulnerability feed

Vulnerability record · CVE-2026-21517 · published 10 February 2026

CVE-2026-21517: Microsoft windows app link following vulnerability

Microsoft · Windows App

Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.

7.0 CVSS 3.1 High EPSS 0.37% · top 71.8% CWE-59 · Link following
7.0CVSS 3.1 base score
0.37%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21517 Vendor Advisory

Track CVE-2026-21517 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-59124Microsoft windows app deserialization of untrusted data vulnerabilityDeserialization of untrusted data in Microsoft High Performance Computing (HPC) Pack allows an unauthorized attacker to execute code over a network.EPSS 1.5%8.8CVE-2026-59133Microsoft windows app execution with unnecessary privileges vulnerabilityExecution with unnecessary privileges in Microsoft High Performance Computing (HPC) Pack allows an authorized attacker to elevate privileges over a n…EPSS 0.91%8.8CVE-2026-47289Microsoft windows app heap-based buffer overflow vulnerabilityHeap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.EPSS 0.82%8.8CVE-2026-42985Microsoft remote desktop client use after free vulnerabilityUse after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.EPSS 0.82%8.8CVE-2025-58718Microsoft remote desktop client use after free vulnerabilityUse after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.EPSS 0.60%8.8CVE-2025-48817Microsoft remote desktop client relative path traversal vulnerabilityRelative path traversal in Remote Desktop Client allows an unauthorized attacker to execute code over a network.EPSS 0.96%8.8CVE-2025-29966Microsoft remote desktop heap-based buffer overflow vulnerabilityHeap-based buffer overflow in Windows Remote Desktop allows an unauthorized attacker to execute code over a network.EPSS 1.4%8.8CVE-2025-26645Microsoft windows 10 1507 relative path traversal vulnerabilityRelative path traversal in Remote Desktop Client allows an unauthorized attacker to execute code over a network.EPSS 3.1%

Source: NIST National Vulnerability Database (record CVE-2026-21517), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.