How severe is CVE-2024-27198?

CVE-2024-27198 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 99.9% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2024-27198: JetBrains TeamCity Authentication Bypass

CISA Known Exploited Vulnerabilities

JetBrains TeamCity Authentication Bypass Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2024-03-07

Remediation due

2024-03-28

Ransomware

Known use

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

CISA 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

Description

In JetBrains TeamCity before 2023.11.4 authentication bypass allowing to perform admin actions was possible

Severity

CVSS 3.1 · CNA9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
JetBrains	TeamCity	0 to <2023.11.4

References

2 Links

Other references

Record Details

Published

2024-03-04

Last updated

2025-10-21

Assigner (CNA)

JetBrains

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.