What is CVE-2024-27199?
In JetBrains TeamCity before 2023.11.4 path traversal allowing to perform limited admin actions was possible
The record classifies CVE-2024-27199 under weakness classes CWE-23, CWE-22. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 971 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 7.3 — HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - EPSS (FIRST)
- 99.9% probability of exploitation in the next 30 days, higher than 99.9% of all scored CVEs
- CISA KEV
- Listed since 2026-04-20, federal remediation deadline 2026-05-04 — used in known ransomware campaigns
- Threadlinqs priority
- 10/10 — CISA lists it as used in ransomware, which Threadlinqs scores at the maximum
- Published
- 2024-03-04, last modified 2026-04-21
Is CVE-2024-27199 being exploited?
CISA added CVE-2024-27199 to the Known Exploited Vulnerabilities catalog on 2026-04-20, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2026-05-04 under BOD 22-01. CISA flags the vulnerability as one used in known ransomware campaigns. Weaponised exploit code for CVE-2024-27199 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. A ProjectDiscovery Nuclei detection template exists (http/cves/2024/CVE-2024-27199.yaml). It currently carries a trending score of 55 in the Threadlinqs vulnerability feed.
- trickest/cve (trickest)
Affected products and versions
- Jetbrains: Teamcity
How to fix CVE-2024-27199
Vendor advisory: https://www.jetbrains.com/privacy-security/issues-fixed/. Because CVE-2024-27199 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2026-05-04. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.
Threat activity tracking CVE-2024-27199
2 tracked threats in the Threadlinqs corpus reference CVE-2024-27199, either in the campaign’s CVE list or as an indicator on the campaign record.
Sources
Enriched from CVE.org, FIRST EPSS, CISA KEV, public proof-of-concept repositories, ProjectDiscovery Nuclei. Last verified by Threadlinqs on .