Home/CVE/Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to e
CVE

CVE-2026-21517

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

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

MEDIUM · CVSS 4.7 EPSS 0.00043
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-59Improper Link Resolution Before File Access ('Link Following')
▤

Affected Products & Versions

1
microsoft windows app< 11.3.2
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPotentially Suspicious Windows App Activity
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Scoring & Timeline

4.7
MEDIUM · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 Feb 2026 · 06:16 PM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
msrcCVE-2026-21517Elevation of Privilege
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External lookups - second-class, for what we don’t hold ourselves
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