CVE-2023-42793

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-10-04), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Exploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 100%CVSS: 9.8Exploit: cisa kev · ssvc active · kev ransomware · Metasploit · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
100%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

September 19, 2023

Last Modified

June 17, 2026

Advisory Details (6)

Auto-updated Sep 14, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

CVE-2023-42793 Vulnerability in TeamCity: Post-Mortem - The JetBrains Blog

https://blog.jetbrains.com/teamcity/2023/09/cve-2023-42793-vulnerability-post-mortem/
generic🔴 Active Exploitation

CVE-2023-42793: Authentication Bypass Using an Alternate Path or Channel | Rapid7 Vulnerability Database

https://attackerkb.com/topics/1XEEEkGHzt/cve-2023-42793
generic

Packet Storm Security

http://packetstormsecurity.com/files/174860/JetBrains-TeamCity-Unauthenticated-Remote-Code-Execution.html
generic🔴 Active Exploitation

Source Code at Risk: Critical Code Vulnerability in CI/CD Platform TeamCity | Sonar

https://www.sonarsource.com/blog/teamcity-vulnerability/
generic🟡 PoC Available

Recently Patched TeamCity Vulnerability Exploited to Hack Servers - SecurityWeek

https://www.securityweek.com/recently-patched-teamcity-vulnerability-exploited-to-hack-servers/
generic

Fixed security issues

https://www.jetbrains.com/privacy-security/issues-fixed/

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 44× in last 7d / 191× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 716 total refreshes for this CVE.

  1. 2026-09-19 11:48 UTCGHSA enrichment
  2. 2026-09-19 07:38 UTCGHSA enrichment
  3. 2026-09-19 03:29 UTCGHSA enrichment
  4. 2026-09-18 23:20 UTCGHSA enrichment
  5. 2026-09-18 19:20 UTCCISA KEV update
  6. 2026-09-18 19:12 UTCGHSA enrichment
  7. 2026-09-18 15:03 UTCGHSA enrichment
  8. 2026-09-18 14:15 UTCCISA KEV update
  9. 2026-09-18 10:54 UTCGHSA enrichment
  10. 2026-09-18 06:45 UTCGHSA enrichment
  11. 2026-09-18 02:37 UTCGHSA enrichment
  12. 2026-09-17 22:28 UTCGHSA enrichment
  13. 2026-09-17 18:20 UTCGHSA enrichment
  14. 2026-09-17 14:11 UTCGHSA enrichment
  15. 2026-09-17 10:01 UTCGHSA enrichment
  16. 2026-09-17 05:51 UTCGHSA enrichment
  17. 2026-09-17 01:42 UTCGHSA enrichment
  18. 2026-09-16 21:33 UTCGHSA enrichment
  19. 2026-09-16 17:24 UTCGHSA enrichment
  20. 2026-09-16 14:10 UTCCISA KEV update
  21. 2026-09-16 13:12 UTCGHSA enrichment
  22. 2026-09-16 09:03 UTCGHSA enrichment
  23. 2026-09-16 04:54 UTCGHSA enrichment
  24. 2026-09-16 00:45 UTCGHSA enrichment
  25. 2026-09-15 20:36 UTCGHSA enrichment
Show 75 more
  1. 2026-09-15 16:14 UTCGHSA enrichment
  2. 2026-09-15 12:05 UTCGHSA enrichment
  3. 2026-09-15 07:55 UTCGHSA enrichment
  4. 2026-09-15 03:46 UTCGHSA enrichment
  5. 2026-09-14 23:38 UTCGHSA enrichment
  6. 2026-09-14 19:29 UTCGHSA enrichment
  7. 2026-09-14 19:24 UTCCISA KEV update
  8. 2026-09-14 15:20 UTCGHSA enrichment
  9. 2026-09-14 11:12 UTCGHSA enrichment
  10. 2026-09-14 07:03 UTCGHSA enrichment
  11. 2026-09-14 02:54 UTCGHSA enrichment
  12. 2026-09-13 22:45 UTCGHSA enrichment
  13. 2026-09-13 18:36 UTCGHSA enrichment
  14. 2026-09-13 14:27 UTCGHSA enrichment
  15. 2026-09-13 10:18 UTCGHSA enrichment
  16. 2026-09-13 06:09 UTCGHSA enrichment
  17. 2026-09-13 02:00 UTCGHSA enrichment
  18. 2026-09-12 21:52 UTCGHSA enrichment
  19. 2026-09-12 17:43 UTCGHSA enrichment
  20. 2026-09-12 13:34 UTCGHSA enrichment
  21. 2026-09-12 09:24 UTCGHSA enrichment
  22. 2026-09-12 05:14 UTCGHSA enrichment
  23. 2026-09-12 01:06 UTCGHSA enrichment
  24. 2026-09-11 20:57 UTCGHSA enrichment
  25. 2026-09-11 18:49 UTCCISA KEV update
  26. 2026-09-11 16:49 UTCGHSA enrichment
  27. 2026-09-11 12:40 UTCGHSA enrichment
  28. 2026-09-11 08:29 UTCGHSA enrichment
  29. 2026-09-11 04:20 UTCGHSA enrichment
  30. 2026-09-11 00:11 UTCGHSA enrichment
  31. 2026-09-10 20:01 UTCGHSA enrichment
  32. 2026-09-10 19:28 UTCCISA KEV update
  33. 2026-09-10 15:52 UTCGHSA enrichment
  34. 2026-09-10 11:43 UTCGHSA enrichment
  35. 2026-09-10 07:34 UTCGHSA enrichment
  36. 2026-09-10 03:25 UTCGHSA enrichment
  37. 2026-09-09 23:16 UTCGHSA enrichment
  38. 2026-09-09 19:08 UTCCISA KEV update
  39. 2026-09-09 19:05 UTCGHSA enrichment
  40. 2026-09-09 14:55 UTCGHSA enrichment
  41. 2026-09-09 10:45 UTCGHSA enrichment
  42. 2026-09-09 06:36 UTCGHSA enrichment
  43. 2026-09-09 02:27 UTCGHSA enrichment
  44. 2026-09-08 22:17 UTCGHSA enrichment
  45. 2026-09-08 18:54 UTCCISA KEV update
  46. 2026-09-08 18:07 UTCGHSA enrichment
  47. 2026-09-08 13:50 UTCGHSA enrichment
  48. 2026-09-08 09:40 UTCGHSA enrichment
  49. 2026-09-08 05:28 UTCGHSA enrichment
  50. 2026-09-08 01:19 UTCGHSA enrichment
  51. 2026-09-07 21:11 UTCGHSA enrichment
  52. 2026-09-07 17:00 UTCGHSA enrichment
  53. 2026-09-07 12:51 UTCGHSA enrichment
  54. 2026-09-07 08:38 UTCGHSA enrichment
  55. 2026-09-07 04:26 UTCGHSA enrichment
  56. 2026-09-07 00:15 UTCGHSA enrichment
  57. 2026-09-06 20:05 UTCGHSA enrichment
  58. 2026-09-06 15:55 UTCGHSA enrichment
  59. 2026-09-06 11:46 UTCGHSA enrichment
  60. 2026-09-06 07:37 UTCGHSA enrichment
  61. 2026-09-06 03:28 UTCGHSA enrichment
  62. 2026-09-05 23:19 UTCGHSA enrichment
  63. 2026-09-05 19:09 UTCGHSA enrichment
  64. 2026-09-05 15:01 UTCGHSA enrichment
  65. 2026-09-05 10:50 UTCGHSA enrichment
  66. 2026-09-05 06:41 UTCGHSA enrichment
  67. 2026-09-05 02:31 UTCGHSA enrichment
  68. 2026-09-04 22:22 UTCGHSA enrichment
  69. 2026-09-04 18:13 UTCGHSA enrichment
  70. 2026-09-04 17:38 UTCCISA KEV update
  71. 2026-09-04 14:03 UTCGHSA enrichment
  72. 2026-09-04 09:52 UTCGHSA enrichment
  73. 2026-09-04 05:42 UTCGHSA enrichment
  74. 2026-09-04 01:32 UTCGHSA enrichment
  75. 2026-09-03 21:21 UTCGHSA enrichment

Publicly available exploits

(7 references)

Working exploit code is in the public domain (1 Metasploit module) (4 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCB4l3rI0n/CVE-2023-42793
    First seen Apr 24, 2024

    JetBrains TeamCity 2023.05.3 - Remote Code Execution (RCE), CVE-2023-42793

    Open source ↗
  • GitHub PoChotplugin0x01/CVE-2023-42793
    First seen Apr 21, 2024

    JetBrains TeamCity Unauthenticated Remote Code Execution - Python3 Implementation

    Open source ↗
  • Exploit-DBEDB-51884
    First seen Mar 14, 2024

    JetBrains TeamCity 2023.05.3 - Remote Code Execution (RCE)

    Open source ↗
  • GitHub PoCZenmovie/CVE-2023-42793
    First seen Oct 5, 2023

    PoC of CVE-2023-42793

    Open source ↗
  • GitHub PoCH454NSec/CVE-2023-42793
    First seen Sep 29, 2023

    JetBrains TeamCity Authentication Bypass CVE-2023-42793 Exploit

    Open source ↗
  • Metasploitexploit/multi/http/jetbrains_teamcity_rce_cve_2023_42793✓ verified
    First seen Sep 19, 2023

    JetBrains TeamCity Unauthenticated Remote Code Execution

    Open source ↗
  • Nucleihttp/cves/2023/CVE-2023-42793.yaml
    First seen Jan 1, 2023

    JetBrains TeamCity < 2023.05.4 - Remote Code Execution

    Open source ↗

Frequently asked(6)

What is CVE-2023-42793?
CVE-2023-42793 is a critical vulnerability published on September 19, 2023. In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible
When was CVE-2023-42793 disclosed?
CVE-2023-42793 was first published in the National Vulnerability Database on September 19, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-42793 actively exploited?
Yes. CISA added CVE-2023-42793 to the Known Exploited Vulnerabilities catalog on October 4, 2023, affecting JetBrains TeamCity. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-42793?
CVE-2023-42793 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2023-42793?
CVE-2023-42793 affects JetBrains TeamCity. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2023-42793?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-42793, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2023-42793

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