CVE-2026-47305 visual studio 2022 vulnerability
Protection mechanism failure in Visual Studio allows an unauthorized attacker to execute code locally.
Quick answer
microsoft visual studio 2022 should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.
Who is affected
Affected versions
- Review vendor advisory for affected versions.
Fixed versions
- Apply the latest vendor-supported patched version.
How to fix it
Protection mechanism failure in Visual Studio allows an unauthorized attacker to execute code locally. This is important for developer machines because a local code execution issue can turn a trusted build workstation into a foothold. Update Visual Studio 2022 to the latest Microsoft patched release. Also be careful with unknown solutions, extensions, and project files until every developer machine is updated.
- List all developer workstations and build servers running Visual Studio 2022 for CVE-2026-47305.
- Install the latest Visual Studio 2022 security update from Microsoft or your approved package source.
- Pause opening unknown solution, project, and extension files until the update is complete.
- Limit local administrator rights on developer machines.
- Review recent extension installs and remove anything that is not trusted.
- Check EDR logs for suspicious compiler, IDE, or script activity.
- Rebuild sensitive projects only after the patched version is confirmed.
Scan now. Google sign-in is only needed to unlock fix guidance.
Verify the fix
- Confirm Visual Studio 2022 reports the patched version in the IDE or installer.
- Check that all machines in scope for CVE-2026-47305 are updated or isolated.
- Open a known safe test solution and confirm normal build behavior.
- Review security logs for unusual child processes from Visual Studio.
- Record the updated version and affected machine list for audit.
Trusted references
FAQ
What is affected by CVE-2026-47305?
microsoft visual studio 2022 should be checked against the vendor advisory and trusted references linked on this page.
What should I fix first?
Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.
How do I confirm the fix worked?
Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.
How are Fixnx security risk categories chosen?
Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.