JetBrains TeamCity Authentication Bypass Vulnerability

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Summary

CVECVE-2023-42793
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-09-19 17:15:00 UTC
Updated2023-10-03 15:44:00 UTC
DescriptionIn JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible

Risk And Classification

EPSS: 0.929130000 probability, percentile 0.997740000 (date 2026-04-21)

CISA KEV: Listed on 2023-10-04; due 2023-10-25; ransomware use Known

Problem Types: CWE-288

CISA Known Exploited Vulnerability

VendorJetBrains
ProductTeamCity
NameJetBrains TeamCity Authentication Bypass Vulnerability
Required ActionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Noteshttps://blog.jetbrains.com/teamcity/2023/09/critical-security-issue-affecting-teamcity-on-premises-update-to-2023-05-4-now/ ; https://nvd.nist.gov/vuln/detail/CVE-2023-42793

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Jetbrains Teamcity All All All All

References

ReferenceSourceLinkTags
JetBrains TeamCity Unauthenticated Remote Code Execution ≈ Packet Storm MISC packetstormsecurity.com
CVE-2023-42793 | AttackerKB MISC attackerkb.com
Critical Authentication Bypass in JetBrains TeamCity CI/CD Servers | Rapid7 Blog MISC www.rapid7.com
CVE-2023-42793 Vulnerability in TeamCity: Post-Mortem | The TeamCity Blog MISC blog.jetbrains.com
Recently Patched TeamCity Vulnerability Exploited to Hack Servers - SecurityWeek MISC www.securityweek.com
Fixed security issues MISC www.jetbrains.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Legacy QID Mappings

  • 378885 JetBrains TeamCity Authentication Bypass Vulnerability
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