# CVE-2026-114158

Heap overflow in Visual Studio allows remote code execution.

- Page: https://www.vulneraibility.com/cve/CVE-2026-114158
- CVSS: 8.8
- Known exploited: not in CISA KEV as of our last sync
- CISA SSVC: exploitation none, automatable no, technical impact total (assessed 2026-11-10)
- Weakness: CWE-122
- Published: 2026-11-10

## Affected versions

- Microsoft Microsoft Visual Studio 2026 version 18.11: affected >= 18.11.0 and < 18.11.4
- Microsoft Microsoft Visual Studio 2026 version 18.12: affected < 18.12.0
- Microsoft .NET 10.0 installed on Windows: affected >= 10.0.0 and < 10.0.15
- Microsoft .NET 11.0 installed on Windows: affected >= 11.0.0-preview.1 and < 11.0.0
- Microsoft .NET 8.0 installed on Windows: affected >= 8.0.0 and < 8.0.34
- Microsoft .NET 9.0 installed on Windows: affected >= 9.0.0 and < 9.0.23

A version outside these ranges is not a statement that it is unaffected.

## Impact

Remote code execution via heap-based buffer overflow over network; attacker can run arbitrary code on affected developer hosts.

## Action

Immediate action required

## Recommendation

Apply Microsoft's Visual Studio security update immediately.

## References

- [patch] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-114158

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.