Vulnerabilities/JetBrains/CVE-2023-42793

CVE-2023-42793: JetBrains TeamCity Authentication Bypass Vulnerability

CISA KEV entry · Last checked 30 Oct 2026, 12:10 UTC

Exploitation confirmedRansomware use knownFix: Unknown

CVSS 3.1 · NVD9.8Critical
EPSS100.0%100th percentile · 29 Oct 2026
CISA KEVListedAdded 4 Oct 2023

JetBrains TeamCity contains an authentication bypass vulnerability that allows for remote code execution on TeamCity Server.

Recommended action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA due date 25 Oct 2023 · CWE-288

Vendor advisory ↗CISA KEV entry ↗

Am I affected?

ProductAffected versionsFixed in
TeamCitybefore 2023.05.4Unknown

No source states a fixed version. Check the vendor advisory below.

Before you patch

Restart

See vendor guidance.

Known issues

Check release notes.

Verification

Confirm installed version.

Timeline

  • 4 Oct 2023 · Added to CISA KEV
  • 25 Oct 2023 · CISA due date

References

Sources checked
CISA KEV30 Oct 2026, 12:10 UTC
CVE List v530 Oct 2026, 12:10 UTC
NVD30 Oct 2026, 12:10 UTC
FIRST EPSS30 Oct 2026, 12:11 UTC

Data from CISA, MITRE, NVD and FIRST. Sources and licences.