CVE-2023-42793

JetBrains TeamCity

Published 19 Sept 2023 · updated 17 Jun 2026 · Analyzed

9.8 Critical · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 4 Oct 2023, with a remediation deadline of 25 Oct 2023 for US federal agencies. It has been used in ransomware campaigns.

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

References

packetstormsecurity.com/files/174860/JetBrains-TeamCity-Unauthenticated-Remote-Code-Execution.html · Exploit, Third Party Advisory, VDB Entry
attackerkb.com/topics/1XEEEkGHzt/cve-2023-42793 · Third Party Advisory
blog.jetbrains.com/teamcity/2023/09/cve-2023-42793-vulnerability-post-mortem/ · Vendor Advisory
www.jetbrains.com/privacy-security/issues-fixed/ · Vendor Advisory
www.rapid7.com/blog/post/2023/09/25/etr-cve-2023-42793-critical-authentication-bypass-in-jetbrains-teamcity-ci-cd-servers/ · Broken Link, Third Party Advisory
www.securityweek.com/recently-patched-teamcity-vulnerability-exploited-to-hack-servers/ · Press/Media Coverage
www.sonarsource.com/blog/teamcity-vulnerability/ · Exploit, Third Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-42793 · US Government Resource