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CVE-2023-42793: JetBrains TeamCity Authentication Bypass Vulnerability

criticalknown exploitedpublic exploitCVE-2023-42793
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
JetBrains TeamCity contains an authentication bypass vulnerability that allows for remote code execution on TeamCity Server.

CSIRTS triage

vendor: JetBrainsproduct: TeamCityAuthentication bypassRemote code execution
What
An authentication bypass vulnerability allows for remote code execution on TeamCity Server.
Who is affected
Users of JetBrains TeamCity.
Urgency
Urgent remediation is required as the vulnerability is actively exploited and critical.
Action
Apply the latest security updates from JetBrains.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2023-10-04
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-42793

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2023-42793coverage & exploitation statusNVD · CVE.org

Recent advisories for JetBrains TeamCity Authentication

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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