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CVE-2023-42793 · CVE record: PUBLISHED

JetBrains TeamCity Authentication Bypass Vulnerability

JetBrains TeamCity

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

Exploitation evidence

Known exploited · CISA KEV listed

Added 2023-10-04. Ransomware campaign use: Known.

CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA due date: 2023-10-25. This is the catalog’s deadline, not an assessment of your organization’s exposure.

KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗

Reported products and versions

JetBrains / TeamCity

Default status: unaffected

affected: 0 to < 2023.05.4 (semver)

Fixes and workarounds

No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.

Sources and related reporting

CVE Program record ↗ · Download tracked evidence as JSON

Observed change timeline

History begins when Egret first downloads each source. It is not the complete upstream CVE history.

12 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-12",
  "epss": 0.99987,
  "percentile": 0.99983
}

10 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-10",
  "epss": 0.99987,
  "percentile": 0.99983
}

09 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-09",
  "epss": 0.99987,
  "percentile": 0.99983
}

08 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-08",
  "epss": 0.99987,
  "percentile": 0.99983
}

07 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-07",
  "epss": 0.99987,
  "percentile": 0.99983
}

06 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-06",
  "epss": 0.99987,
  "percentile": 0.99983
}

06 Nov 2026, 06:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-05",
  "epss": 0.99987,
  "percentile": 0.99983
}

04 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-04",
  "epss": 0.99987,
  "percentile": 0.99983
}

04 Nov 2026, 18:20 Jerusalem · CVE Program record changed

Stored CNA snapshot at this observation.

{
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            "url": "https://www.jetbrains.com/privacy-security/issues-fixed/"
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            "url": "https://blog.jetbrains.com/teamcity/2023/09/cve-2023-42793-vulnerability-post-mortem/"
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            "url": "http://packetstormsecurity.com/files/174860/JetBrains-TeamCity-Unauthenticated-Remote-Code-Execution.html"
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            "url": "https://attackerkb.com/topics/1XEEEkGHzt/cve-2023-42793"
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            "url": "https://www.securityweek.com/recently-patched-teamcity-vulnerability-exploited-to-hack-servers/"
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            "url": "https://www.rapid7.com/blog/post/2023/09/25/etr-cve-2023-42793-critical-authentication-bypass-in-jetbrains-teamcity-ci-cd-servers/"
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        "metrics": [
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03 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-03",
  "epss": 0.99987,
  "percentile": 0.99983
}

03 Nov 2026, 02:22 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-02",
  "epss": 0.99987,
  "percentile": 0.99983
}

03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed

Stored KEV snapshot at this observation.

{
  "cveID": "CVE-2023-42793",
  "cwes": [
    "CWE-288"
  ],
  "dateAdded": "2023-10-04",
  "dueDate": "2023-10-25",
  "forensicTriage": "No",
  "knownRansomwareCampaignUse": "Known",
  "notes": "https://blog.jetbrains.com/teamcity/2023/09/critical-security-issue-affecting-teamcity-on-premises-update-to-2023-05-4-now/ ;  https://nvd.nist.gov/vuln/detail/CVE-2023-42793",
  "product": "TeamCity",
  "requiredAction": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
  "shortDescription": "JetBrains TeamCity contains an authentication bypass vulnerability that allows for remote code execution on TeamCity Server.",
  "vendorProject": "JetBrains",
  "vulnerabilityName": "JetBrains TeamCity Authentication Bypass Vulnerability"
}

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