CVE-2024-27198—JetBrains TeamCity Authentication Bypass Vulnerability

Vulnerability Name

JetBrains TeamCity Authentication Bypass Vulnerability

Description

JetBrains TeamCity contains an authentication bypass vulnerability that allows an attacker to perform admin actions.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:

KNOWN

Action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Additional Notes

• https://www.jetbrains.com/help/teamcity/teamcity-2023-11-4-release-notes.html
• https://blog.jetbrains.com/teamcity/2024/03/additional-critical-security-issues-affecting-teamcity-on-premises-cve-2024-27198-and-cve-2024-27199-update-to-2023-11-4-now/
• https://nvd.nist.gov/vuln/detail/CVE-2024-27198

Related News Articles

• CISA Adds 8 Exploited Flaws to KEV, Sets April-May 2026 Federal DeadlinesApril 21, 2026
• China-Linked Storm-1175 Exploits Zero-Days to Rapidly Deploy Medusa RansomwareApril 7, 2026
• Microsoft links Medusa ransomware affiliate to zero-day attacksApril 6, 2026
• China-Linked Hackers Exploit SAP and SQL Server Flaws in Attacks Across Asia and BrazilMay 30, 2025
• Void Banshee APT Exploits Microsoft MHTML Flaw to Spread Atlantida StealerJuly 16, 2024

Related Weaknesses

• CWE-288