CVE-2024-27199
JetBrains TeamCity Relative Path Traversal Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 4 May 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
In JetBrains TeamCity before 2023.11.4 path traversal allowing to perform limited admin actions was possible
- CVSS 3.1
- 7.3 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- EPSS
- 99.99% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 20 April 2026 · due 4 May 2026 · used in ransomware campaigns
- Weakness
- CWE-23, CWE-22
- Affected
- jetbrains/teamcity
- Source
- cve@jetbrains.com
EPSS 100.0% since 27 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, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://www.jetbrains.com/privacy-security/issues-fixed/ ; 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-2024-27199
References
- https://www.darkreading.com/cyberattacks-data-breaches/jetbrains-teamcity-mass-exploitation-underway-rogue-accounts-thrivePress/Media Coverage
- 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
- https://www.jetbrains.com/privacy-security/issues-fixed/Vendor Advisory
- https://github.com/Stuub/RCity-CVE-2024-27198/blob/main/RCity.pyExploit
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-27199US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.