CVE-2024-27199
KEVRansomware UseJetBrains TeamCity Relative Path Traversal Vulnerability
Description
JetBrains TeamCity contains a relative path traversal vulnerability that could allow limited admin actions to be performed.
In JetBrains TeamCity before 2023.11.4 path traversal allowing to perform limited admin actions was possible
CVSS 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:LPublishedMar 4, 2024
Last modifiedJun 17, 2026
Added to KEVApr 20, 2026
Remediation dueMay 4, 2026
References
- darkreading.com/cyberattacks-data-breaches/jetbrains-teamcity-mass-exploitation-underway-rogue-accounts-thrivePress/Media Coverage
- jetbrains.com/privacy-security/issues-fixed/Vendor Advisory
- github.com/Stuub/RCity-CVE-2024-27198/blob/main/RCity.pyExploit
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-27199US Government Resource
0 recent articles mention this CVE
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Risk assessment · Critical
Actively exploited and used by ransomware crews. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 175 days
- Ransomware
- Used in known ransomware campaigns
- CVSS
- 7.3 HIGH
- EPSS (30-day exploit probability)
- 100.0% · top 1% of all CVEs
- Weakness
- CWE-23
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
- 5.Verify offline/immutable backups and segment the affected systems. This flaw is used for ransomware initial access.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.