What is CVE-2026-69805?

CVE-2026-69805 is a high-severity vulnerability in Microsoft Microsoft.diagnostics.runtime, classified under External Control of File Name or Path. CVSS score: 7.5/10. Published 2026-09-08.

How severe is CVE-2026-69805?

High severity. CVSS v3 base score is 7.5 out of 10.

Information disclosure in Microsoft Microsoft.diagnostics.runtime

CVE-2026-69805

External control of file name or path in .NET allows an unauthorized attacker to elevate privileges over a network.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Microsoft Microsoft.diagnostics.runtime
Microsoft Visual Studio 2022 Version 17.14
Microsoft Visual Studio 2026 Version 18.9

Weakness classification (CWE)

CWE-73 — External Control of File Name or Path
CWE-200 — Information Disclosure
CWE-522 — Insufficiently Protected Credentials

References

secure@microsoft.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-69805?: CVE-2026-69805 is a high-severity vulnerability in Microsoft Microsoft.diagnostics.runtime, classified under External Control of File Name or Path. CVSS score: 7.5/10. Published 2026-09-08.
How severe is CVE-2026-69805?: High severity. CVSS v3 base score is 7.5 out of 10.