CVE-2024-27198
JetBrains TeamCity Authentication Bypass Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 28 March 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
In JetBrains TeamCity before 2023.11.4 authentication bypass allowing to perform admin actions was possible
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.94% probability · 100th percentile
- Public exploits
- 1 in Exploit-DB · first 11 August 2025
- CISA KEV
- Listed 7 March 2024 · due 28 March 2024 · used in ransomware campaigns
- Weakness
- CWE-288
- Affected
- jetbrains/teamcity
- Source
- cve@jetbrains.com
EPSS 99.9% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. 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
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://www.darkreading.com/cyberattacks-data-breaches/jetbrains-teamcity-mass-exploitation-underway-rogue-accounts-thrivePress/Media Coverage, Third Party Advisory
- https://www.jetbrains.com/privacy-security/issues-fixed/Vendor Advisory
- https://www.darkreading.com/cyberattacks-data-breaches/jetbrains-teamcity-mass-exploitation-underway-rogue-accounts-thrivePress/Media Coverage, Third Party Advisory
- https://www.jetbrains.com/privacy-security/issues-fixed/Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-27198US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.