Windows
CVE-2026-21517
MEDIUM
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.
AnalysisAI
Windows App for Mac is susceptible to privilege escalation through improper symbolic link resolution, enabling authenticated local attackers to bypass access controls and gain elevated privileges. The vulnerability stems from insufficient validation during file operations and requires low-level user privileges and specific system conditions to exploit. No patch is currently available.
Technical ContextAI
Classified as CWE-59 (Improper Link Resolution Before File Access). Affects Windows App. Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.
RemediationAI
Monitor vendor advisories for a patch.
Windows Win32k fails to properly handle objects in memory, allowing local privilege escalation exploited in the wild in
A privilege escalation vulnerability (CVSS 5.5). Risk factors: actively exploited (KEV-listed), EPSS 94% exploitation pr
Windows Internet Shortcut Files (.url) contain an external control vulnerability (CVE-2025-33053, CVSS 8.8) that enables
Windows SMB contains an improper access control vulnerability (CVE-2025-33073, CVSS 8.8) enabling authenticated attacker
Twonky Server 8.5.2 on Linux and Windows allows unauthenticated access to the admin log file through a web service API b
An unrestricted file upload vulnerability exists in MiniWeb HTTP Server <= Build 300 that allows unauthenticated remote
FreeFloat FTP Server contains multiple critical design flaws that allow unauthenticated remote attackers to upload arbit
Serviio Media Server versions 1.4 through 1.8 on Windows contain an unauthenticated command injection in the /rest/actio
Twonky Server 8.5.2 uses hard-coded cryptographic keys for encrypting the administrator password. Combined with the cred
Mako Server versions 2.5 and 2.6 contain an unauthenticated OS command injection via the tutorial interface at examples/
React Native Metro Development Server binds to external interfaces by default and contains an OS command injection endpo
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network
Same weakness CWE-59 – Improper Link Resolution Before File Access
View allShare
External POC / Exploit Code
Leaving vuln.today