{"cve":{"cve_id":"CVE-2024-27198","is_kev":true,"kev_date_added":"2024-03-07","kev_vendor_project":"JetBrains","kev_product":"TeamCity","kev_vulnerability_name":"JetBrains TeamCity Authentication Bypass Vulnerability","kev_short_description":"JetBrains TeamCity contains an authentication bypass vulnerability that allows an attacker to perform admin actions.","kev_required_action":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","kev_due_date":"2024-03-28","kev_known_ransomware":true,"kev_notes":"https://www.jetbrains.com/help/teamcity/teamcity-2023-11-4-release-notes.html; https://blog.jetbrains.com/teamcity/2024/03/additional-critical-security-issues-affecting-teamcity-on-premises-cve-2024-27198-and-cve-2024-27199-update-to-2023-11-4-now/ ; https://nvd.nist.gov/vuln/detail/CVE-2024-27198","kev_cwes":["CWE-288"],"epss_score":0.99938,"epss_percentile":0.99969,"epss_as_of":"2026-06-23","description":"In JetBrains TeamCity before 2023.11.4 authentication bypass allowing to perform admin actions was possible","published_at":"2024-03-04T17:21:39.422000Z","last_modified_at":null,"cvss_v3_score":9.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"active","ssvc_automatable":true,"ssvc_technical_impact":"total","cwes":["CWE-288"],"nvd_references":["https://www.jetbrains.com/privacy-security/issues-fixed/","https://www.darkreading.com/cyberattacks-data-breaches/jetbrains-teamcity-mass-exploitation-underway-rogue-accounts-thrive"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:31.350578Z","updated_at":"2026-06-29T01:54:51.652410Z"},"effective_severity":"CRITICAL","badges":["kev","ransomware","poc","epss"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"jetbrains","vendor_name":"JetBrains","product_slug":"teamcity","product_name":"TeamCity","version_start":"0","version_start_inclusive":true,"version_end":"2023.11.4","version_end_inclusive":false,"cpe23_uri":"cve5:jetbrains:teamcity:0:2023.11.4"}],"exploit_refs":[{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-27198.yaml","title":"TeamCity < 2023.11.4 - Authentication Bypass","author":"DhiyaneshDk","disclosed_at":null}],"news":[],"references":[{"url":"https://www.jetbrains.com/privacy-security/issues-fixed/","source_type":"MISC","tags":["patch"]},{"url":"https://www.darkreading.com/cyberattacks-data-breaches/jetbrains-teamcity-mass-exploitation-underway-rogue-accounts-thrive","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2024-03-04T17:21:39.422000Z","label":"CVE published","source":null},{"type":"cisa_reported","at":"2024-03-07T00:00:00Z","label":"Added to CISA KEV catalog","source":"kev"},{"type":"poc_available","at":"2026-06-24T00:29:48.638073Z","label":"Public PoC available","source":"nuclei"},{"type":"cvss_changed","at":"2026-06-28T17:34:44.935294Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:34:44.935294Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:34:44.935294Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T01:54:51.652410Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:54:51.652410Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:54:51.652410Z","label":"SSVC decision revised","source":"vulnrichment"}]}