Unauthenticated Remote Code Execution in JetBrains TeamCity by JetBrains
CVE-2026-63077

9.8CRITICAL

Key Information:

Vendor

Jetbrains
Status
Teamcity
Vendor
CVE Published:
27 July 2026

What is CVE-2026-63077?

An unauthenticated remote code execution vulnerability has been identified in JetBrains TeamCity prior to version 2026.1.3 and 2025.11.7. This weakness is exposed through the agent polling protocol, allowing attackers to execute arbitrary code without authentication, posing significant risks to the integrity and availability of systems utilizing affected versions.

Affected Version(s)

TeamCity 0 < 2026.1.3, 2025.11.7

References

https://www.jetbrains.com/privacy-security/issues-fixed/

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.