CVE-2024-27198 (GCVE-0-2024-27198)
Vulnerability from cvelistv5 – Published: 2024-03-04 17:21 – Updated: 2025-10-21 23:05Summary
In JetBrains TeamCity before 2023.11.4 authentication bypass allowing to perform admin actions was possible
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-03-20 14:07 UTC
CWE
Assigner
References
3 references
Impacted products
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 24c54e0e-a751-4f33-91b8-30bcfd2ba474
Exploited: Yes
Timestamps
First Seen: 2024-03-07
Asserted: 2024-03-07
Scope
Notes: KEV entry: JetBrains TeamCity Authentication Bypass Vulnerability | Affected: JetBrains / TeamCity | Description: JetBrains TeamCity contains an authentication bypass vulnerability that allows an attacker to perform admin actions. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2024-03-28 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://www.jetbrains.com/help/teamcity/teamcity-2023-11-4-release-notes.html; https://nvd.nist.gov/vuln/detail/CVE-2024-27198
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-288 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | TeamCity |
| Due Date | 2024-03-28 |
| Date Added | 2024-03-07 |
| Vendorproject | JetBrains |
| Vulnerabilityname | JetBrains TeamCity Authentication Bypass Vulnerability |
| Knownransomwarecampaignuse | Known |
References
Created: 2026-02-02 13:24 UTC
| Updated: 2026-02-06 07:53 UTC
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 63208b3e-4c9a-4766-95af-d63b0ba279e4
Exploited: Yes
Characteristics
Severity:
0.0
Timestamps
First Seen: 2024-03-05
Asserted: 2024-03-05
Last Seen: 2026-09-05
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: JetBrains / TeamCity | Class: other-software | Severity: None (CVSS 0) | IoT: no | In CISA KEV: yes | Honeypot connections on 2026-09-05: 1
Evidence
Type: Honeypot
Signal: In The Wild Attempts
Confidence: 70%
Source: shadowserver
Details
| 1D | 1 |
|---|---|
| Iot | no |
| Feed | Shadowserver Foundation honeypot/exploited-vulnerabilities |
| Type | http-scan |
| Class | other-software |
| 7D Avg | 1 |
| Vendor | JetBrains |
| 30D Avg | 1 |
| 90D Avg | 2 |
| Product | TeamCity |
| Cisa Kev | yes |
| Connections | 1 |
| Observation Date | 2026-09-05 |
| Vulnerability Class | CVSS |
| Vulnerability Score | 0 |
| Vulnerability Severity | None |
References
Created: 2026-07-01 05:53 UTC
| Updated: 2026-09-07 01:01 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 0f00143e-1359-45fd-89cd-6d239c8ad7ea
Exploited: Yes
Timestamps
First Seen: 2024-03-07
Asserted: 2024-03-07
Scope
Notes: KEVIntel entry: In JetBrains TeamCity before 2023.11.4 authentication bypass allowing to perform admin actions was possible | Affected: JetBrains / TeamCity | CVSS: 9.8 (CRITICAL) | EPSS: 0.99938 | Used in malware: yes | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Confirmed Compromise
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | In JetBrains TeamCity before 2023.11.4 authentication bypass allowing to perform admin actions was possible |
| Vendor | JetBrains |
| Product | TeamCity |
| Added Date | 2024-03-07T00:00:00.000Z |
| Cvss Score | 9.8 |
| Epss Score | 0.99938 |
| Cvss Severity | CRITICAL |
| Epss Percentile | 0.99969 |
| Used In Malware | yes |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 11:14 UTC
| Updated: 2026-06-23 11:14 UTC
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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