CVE-2025-24043Network attack vector

Authenticated code execution via unverified debugger payloads

Published Mar 11, 2025 · Updated Feb 13, 2026

Improper signature verification in Microsoft WinDbg before 1.2502.25002.0 allows remote authenticated users to execute code over a network. During dump analysis, SOS secure mode incorrectly validates cryptographic signatures on downloaded dynamic payloads and can load tampered code. Exploitation requires an authenticated network attacker and high-complexity preparation, but no user interaction, and code runs in the debugger's security context.

CVSS severity7.5
High
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper signature verification in Microsoft WinDbg before 1.2502.25002.0 allows remote authenticated users to execute code over a network. During dump analysis, SOS secure mode incorrectly validates cryptographic signatures on downloaded dynamic payloads and can load tampered code. Exploitation requires an authenticated network attacker and high-complexity preparation, but no user interaction, and code runs in the debugger's security context.

The record

CVE
CVE-2025-24043
Published
Mar 11, 2025
Updated
Feb 13, 2026
Vendor
Microsoft
Product
WinDbg
Classifications
CWE-347
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 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 <1.2502.25002.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · WinDbgversion=1.0.0 <1.2502.25002.0

Published CVSS scores

7.5GitHub Security AdvisoryCVSS:3.1/AV:N/AC:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature

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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