CVE-2025-24043 — dotnet-sos
HIGHCVE-2025-24043 is a high-severity (CVSS 7.5) CWE-347 vulnerability in dotnet-sos. A fix is available for dotnet-sos — see the affected versions and patch details below.
Microsoft Security Advisory CVE-2025-24043 | WinDbg Remote Code Execution Vulnerability
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2025-24043.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
dotnet-sos.NETdotnet-dump.NETdotnet-debugger-extensionsReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.
Description
Microsoft Security Advisory CVE-2025-24043 | WinDbg Remote Code Execution Vulnerability
<a name="executive-summary"></a>Executive summary
Microsoft is releasing this security advisory to provide information about a vulnerability in WinDbg. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.
Improper verification of cryptographic signature in SOS allows an authorized attacker to execute code over a network resulting in Remote Code Execution.
Announcement
Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/346
<a name="mitigation-factors"></a>Mitigation factors
Microsoft has not identified any mitigating factors for this vulnerability.
<a name="affected-packages"></a>Affected Packages
The vulnerability affects any Microsoft .NET Core project if it uses any of affected packages versions listed below
<a name="">WinDbg</a> WinDbg
| Package name | Affected version | Patched version |
|---|---|---|
| dotnet-sos | < 9.0.607501 | 9.0.607501 |
| dotnet-dump | < 9.0.557512 | 9.0.607501 |
| dotnet-debugger-extensions | 9.0.557512 | 9.0.607601 |
Advisory FAQ
<a name="how-affected"></a>How do I know if I am affected?
If you you are using the affected version listed in affected packages, you're exposed to the vulnerability.
<a name="how-fix"></a>How do I fix the issue?
- To fix the issue please install the latest version of WinDbg.
- If your application references the vulnerable package, update the package reference to the patched version.
Other Information
Reporting Security Issues
If you have found a potential security issue, please email details to [email protected]. Reports may qualify for the Microsoft .NET Core & .NET 5 Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty.
Support
You can ask questions about this issue on GitHub in the .NET GitHub organization.
Disclaimer
The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
External Links
Revisions
V1.0 (March 06, 2024): Advisory published.
Version 1.0
Last Updated 2025-03-06
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| .NETNuGet | dotnet-sos | all versions | 9.0.607501dotnet add package dotnet-sos --version 9.0.607501 |
| .NETNuGet | dotnet-dump | all versions | 9.0.607501dotnet add package dotnet-dump --version 9.0.607501 |
| .NETNuGet | dotnet-debugger-extensions | all versions | 9.0.607601dotnet add package dotnet-debugger-extensions --version 9.0.607601 |
Affected Products
windbgmicrosoftDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for dotnet-sos, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update dotnet-sos to 9.0.607501 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-24043 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
Frequently Asked Questions
Is CVE-2025-24043 in your dependencies?
Find it across NuGet, including transitive dependencies.