CVE-2026-54782: CoreWCF: Authentication bypass in CoreWCF SAML 1.1 / 2.0 token signature validation

Ghostwire Analysis — What This Means Practically

• Critical CVSS score indicates maximum severity — remote code execution, authentication bypass, or complete system compromise is likely possible.
• 1 proof-of-concept exploit available on GitHub. Public exploit code lowers the barrier for both researchers and attackers.

This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.