Overview
JetBrains TeamCity contains an authentication bypass vulnerability that allows for remote code execution on TeamCity Server.
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
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2023-42793 |
| Vendor / Product | JetBrains — TeamCity |
| NVD Published | 2023-09-19 |
| NVD Last Modified | 2025-10-24 |
| CVSS 3.1 Score | 9.8 |
| CVSS 3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Severity | CRITICAL |
| CWE | CWE-288 |
| CISA KEV Added | 2023-10-04 |
| CISA KEV Deadline | 2023-10-25 |
| Known Ransomware Use | ⚠️ Yes |
CVSS 3.1 Breakdown
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Required Action
CISA BOD 22-01 Deadline: 2023-10-25.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Timeline
| Date | Event |
|---|---|
| 2023-10-04 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2023-10-25 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2023-42793 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |