CVE-2025-21405

Local privilege escalation

Published Jan 14, 2025 · Updated Jun 9, 2026

Improper access control in Microsoft Visual Studio 2022 17.12.0 through 17.12.3 allows local users to elevate privileges. Microsoft has not published the affected component, code locus, or incorrect operation performed on untrusted input. Exploitation requires existing low-privilege access and user interaction; the resulting privilege gain can expose, alter, or disrupt local resources.

CVSS severity7.3
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Microsoft Visual Studio 2022 17.12.0 through 17.12.3 allows local users to elevate privileges. Microsoft has not published the affected component, code locus, or incorrect operation performed on untrusted input. Exploitation requires existing low-privilege access and user interaction; the resulting privilege gain can expose, alter, or disrupt local resources.

The record

CVE
CVE-2025-21405
Published
Jan 14, 2025
Updated
Jun 9, 2026
Vendor
Microsoft
Product
Microsoft Visual Studio 2022 version 17.12
Classifications
CWE-284, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 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=17.12.0 <17.12.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft Visual Studio 2022 version 17.12version=17.12.0 <17.12.4

Published CVSS scores

7.3Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:R/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1068Exploitation for Privilege Escalation

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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