Improper Verification of Cryptographic Signature in Microsoft .NET Framework - CVE-2026-57098
Published: September 8, 2026
Vulnerability identifier: #VU147477
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-57098
CWE-ID: CWE-347
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper verification of cryptographic signatures in the Windows RDP Client when verifying cryptographic signatures. A remote attacker can trigger the improper signature verification to disclose sensitive information.
Successful exploitation may expose small portions of heap memory.
Affected software
Microsoft .NET Framework
How to mitigate CVE-2026-57098
Install security update from vendor's website.
Microsoft .NET Framework - update to 1.2.7279.0