Improper Removal of Sensitive Information Before Storage or Transfer in Microsoft products - CVE-2026-62900

Vulnerability details

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to improper removal of sensitive information before storage or transfer in .NET when handling data over a network. A remote attacker can access exposed data to disclose sensitive information.

Successful exploitation requires that the target system be set up in a specific manner and that the attacker have knowledge of that setup. Credentials may be disclosed.

Affected software

How to mitigate CVE-2026-62900

External References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-62900

Related Security Bulletins

• Multiple vulnerabilities in Microsoft .NET Framework