CVE tracker / CVE-2026-62900
CVE-2026-62900
CVE-2026-62900 is the .NET Information Disclosure Vulnerability. Microsoft rates it Important, CVSS 5.9. It is not in CISA's Known Exploited Vulnerabilities catalog. Published August 11, 2026.
Risk summary
Microsoft describes it: “Improper removal of sensitive information before storage or transfer in .NET allows an unauthorized attacker to disclose information over a network.”
How to fix it
Microsoft lists 10 affected products and the update that fixes each:
- KB5122104 · fixed build 8.0.30
.NET 8.0 runtime installed on Mac OS, .NET 8.0 runtime installed on Linux, .NET 8.0 runtime installed on Windows - KB5122105 · fixed build 9.0.19
.NET 9.0 runtime installed on Windows, .NET 9.0 runtime installed on Mac OS, .NET 9.0 runtime installed on Linux - KB5122106 · fixed build 10.0.11
.NET 10.0 runtime installed on Linux, .NET 10.0 runtime installed on Mac OS - No update listed · fixed build 17.14.38
Microsoft Visual Studio 2022 version 17.14 - No update listed · fixed build 18.8.3
Microsoft Visual Studio 2026 version 18.8
What Microsoft changed
- August 11, 2026: Information published.
Details
- Weakness
- CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer
- Publicly disclosed (Microsoft)
- No
- Exploited (Microsoft)
- No
- Known exploited (CISA KEV)
- Not listed
- Published
- August 11, 2026
- Last revised
- August 11, 2026
Get told when this changes
Senserva Watch emails Microsoft security and patch alerts when something moves: a new exploitation report, a revised fix, a known issue. Free, one email address.
References
From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.