Skip to main content
ExploitedIn CISA KEVFix available

CVE-2023-42793

Exploitation confirmed. First attested on 2023-10-04 by CISA-ADP, CISA KEV, GCVE · kevintel, GCVE · shadowserver.

  • Published2023-09-19
  • Fixed in2023.05.4
  • WeaknessCWE-288 · CWE-306

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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

Timeline

dates in UTC
  1. 2023-09-1917:15CVE publishedNVD
  2. 2023-10-04Added to the CISA KEV catalogCISA KEV
  3. 2023-10-04Listed as exploited by GCVEGCVE
  4. 2023-10-04Exploitation first reportedCISA KEV
  5. 2023-12-1318:39SSVC exploitation set to activeCISA-ADP
  6. 2024-03-14Exploit-DB entryExploit-DB

Observed activity

isMalicious corpus · updated 2026-11-03 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-42793?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-42793?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Jetbrains teamcity
BranchAffectedFixed in
2023.5< 2023.05.42023.05.4

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As JetBrains, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • JetBrains TeamCityother versions: not affected
    Affected
    • < 2023.05.4fixed in 2023.05.4semver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2024-12-16

Fix

  1. Update Jetbrains teamcity to 2023.05.4
  2. CISA’s required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.due 2023-10-25

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
EDB-51884
Exploit-DB
Proof-of-concept repositories
17 repositories, unverifiedH454NSec/CVE-2023-42793whoamins/CVE-2023-42793Zenmovie/CVE-2023-42793johnossawy/CVE-2023-42793_POCStanleyJobsonAU/GhostTown
PoC-in-GitHub
Metasploit modules
1 moduleexploit/multi/http/jetbrains_teamcity_rce_cve_2023_42793rank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2023-10-04
Patch Due Date
2023-10-25
Ransomware Use
Known
Required Action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2023-09-19
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-w796-2gq9-7jm8

Frequently asked questions

What is CVE-2023-42793?

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

Is CVE-2023-42793 actively exploited?

Yes. CVE-2023-42793 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2023-10-25.

What is the CVSS score for CVE-2023-42793?

CVE-2023-42793 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Hear about the next vulnerability in your software

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, October 2023Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record