CISA KEV · Known exploitedCritical

CVE-2023-42793

JetBrains TeamCity

In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible

CVSS
9.8
EPSS
100.0%
100.0% percentile
CISA KEV
Listed
Published
2023.09.20
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability100.0%
Technical severityCVSS 9.8

Vulnerability overview

In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible

Affected product and versions

Product
JetBrains TeamCity
Affected versions
< 2023.05.4
Fixed versions
2023.05.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

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

Due date: 2023.10.25
  1. 1
    Identify

    Confirm that JetBrains TeamCity and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-288, CWE-306
KEV added
2023.10.04
Ransomware use
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CVE-2023-42793 — JetBrains TeamCity | SECUFOCUS NOW