CVE-2023-42793
CRITICALCISA KEVEPSS 100th pctlDescription
In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
JetBrains TeamCity Authentication Bypass Vulnerability
JetBrains TeamCity contains an authentication bypass vulnerability that allows for remote code execution on TeamCity Server.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Remediation due: 2023-10-25
Associated with ransomware campaigns
References
Related Vulnerabilities
Other CWE-288 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-1709 | Critical | 10.0 | 100% | KEV + Ransom | Fix |
| CVE-2024-27198 | Critical | 9.8 | 100% | KEV + Ransom | Fix |
| CVE-2025-4427 | Medium | 5.3 | 100% | KEV | Fix |
| CVE-2024-55591 | Critical | 9.8 | 98% | KEV + Ransom | Fix |
| CVE-2023-46747 | Critical | 9.8 | 97% | KEV + Ransom | - |
| CVE-2026-23760 | Critical | 9.8 | 96% | KEV + Ransom | Fix |
Common questions
How do I fix CVE-2023-42793?
Upgrade JetBrains TeamCity to 2023.05.4 or later.
Is CVE-2023-42793 being actively exploited?
Yes. CVE-2023-42793 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. CISA has also linked it to known ransomware campaigns. US federal agencies were required to remediate it by 2023-10-25. Treat it as a priority whatever its CVSS score says.
How severe is CVE-2023-42793?
CVE-2023-42793 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2023-42793 affect?
Published advisories record a fix for JetBrains TeamCity (Windows application). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2023-42793
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-24.