CVE-2023-42793
Critical 9.8 Exploited in the wild (KEV) Used in ransomware campaigns
Confirmed active exploitation — CISA KEV catalog
- Name
- JetBrains TeamCity Authentication Bypass Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Description
In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible
Metrics
- CVSS 3.1
-
9.8 (CRITICAL)
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 100% (percentile: 100) as of 2 November 2026
- CWE
- CWE-288, CWE-306
Affected products
jetbrains: teamcity
References
- https://blog.jetbrains.com/teamcity/2023/09/cve-2023-42793-vulnerability-post-m… Vendor Advisory
- https://www.jetbrains.com/privacy-security/issues-fixed/ Vendor Advisory
- https://blog.jetbrains.com/teamcity/2023/09/cve-2023-42793-vulnerability-post-m… Vendor Advisory
- https://www.jetbrains.com/privacy-security/issues-fixed/ Vendor Advisory
- http://packetstormsecurity.com/files/174860/JetBrains-TeamCity-Unauthenticated-… ExploitThird Party AdvisoryVDB Entry
- https://www.sonarsource.com/blog/teamcity-vulnerability/ ExploitThird Party Advisory
- http://packetstormsecurity.com/files/174860/JetBrains-TeamCity-Unauthenticated-… ExploitThird Party AdvisoryVDB Entry
- https://attackerkb.com/topics/1XEEEkGHzt/cve-2023-42793 Third Party Advisory
- https://www.rapid7.com/blog/post/2023/09/25/etr-cve-2023-42793-critical-authent… Broken LinkThird Party Advisory
- https://www.securityweek.com/recently-patched-teamcity-vulnerability-exploited-… Press/Media Coverage