CVE-2026-63077

Overview • Visual Flow • Requirements • Usage • Limitations • Mitigation !CAUTION This PoC executes an operating-system command and can modify the TeamCity application directory. Use it only in an isolated lab or against systems for which you have explicit written authorization. ⚡ Overview...

CVE-2026-63077: Critical unauthenticated remote code execution in JetBrains TeamCity

Overview On July 27, 2026, JetBrains published a security advisory for CVE-2026-63077, a critical unauthenticated vulnerability affecting all versions of TeamCity On-Premises. The issue is classified as deserialization of untrusted data and has a CVSS score of 9.8. An unauthenticated remote...