Vulnerability Analysis: CVE-2026-63077 Unauthenticated Remote Code Execution in JetBrains TeamCity
Introduction On August 5, 2026, cybersecurity researchers disclosed a critical security vulnerability designated as CVE-2026-63077 (CVSS v3.1 Score: 9.8 – Critical) affecting JetBrains TeamCity On-Premises installations. TeamCity is one of the world’s most widely adopted Continuous Integration and Continuous Deployment (CI/CD) server solutions, serving as the core infrastructure for source code compilation, secret storage, and automated deployment pipelines across enterprise environments. CVE-2026-63077 represents an unauthenticated Remote Code Execution (RCE) vulnerability that allows