CVE-2025-21322

Local privilege escalation via improper link resolution

Published Feb 11, 2025 · Updated Feb 13, 2026

Improper link resolution in Microsoft PC Manager before 3.15.4.0 allows local users to elevate privileges through unsafe file access. Published records identify link resolution before file access but disclose no affected component, function, or specific link-handling operation. Low-privilege local access is required, and successful exploitation grants elevated control over protected resources on the affected host.

CVSS severity7.8
High
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper link resolution in Microsoft PC Manager before 3.15.4.0 allows local users to elevate privileges through unsafe file access. Published records identify link resolution before file access but disclose no affected component, function, or specific link-handling operation. Low-privilege local access is required, and successful exploitation grants elevated control over protected resources on the affected host.

The record

CVE
CVE-2025-21322
Published
Feb 11, 2025
Updated
Feb 13, 2026
Vendor
Microsoft
Product
Microsoft PC Manager
Classifications
CWE-59
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <3.15.4.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft PC Managerversion=1.0.0 <3.15.4.0

Published CVSS scores

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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