In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol
Published Jul 27, 2026 ·Due Aug 8, 2026
9.8
CRITICALCVSS 3.1
EPSS 89.57%
Description
In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol
Affected products
-
- Version 0StatusaffectedConstraints<2026.1.3, 2025.11.7
- Version
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
Date Added
Aug 5, 2026
Patch Due
Aug 8, 2026
Required Action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Aug 5, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Jul–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (7 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 89.57% (0.89570) | 99.78th | v5 (v2026.06.15) |
| Sep 4, 2026 | 86.52% (0.86518) | 99.72th | v5 (v2026.06.15) |
| Aug 28, 2026 | 87.71% (0.87709) | 99.75th | v5 (v2026.06.15) |
| Aug 24, 2026 | 84.73% (0.84733) | 99.69th | v5 (v2026.06.15) |
| Aug 23, 2026 | 12.04% (0.12038) | 95.88th | v5 (v2026.06.15) |
| Aug 10, 2026 | 10.72% (0.10722) | 95.39th | v5 (v2026.06.15) |
| Jul 28, 2026 | 0.65% (0.00649) | 47.38th | v5 (v2026.06.15) |
References (2)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-63077 government-resourceUS Government Resource
- https://www.jetbrains.com/privacy-security/issues-fixed/ Vendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-63077 | government-resourceUS Government Resource | |
| https://www.jetbrains.com/privacy-security/issues-fixed/ | Vendor Advisory |
Change history (1)
- CISA KEV
- Ransomware use changed from Unknown to
Known Unknown → Known
- Ransomware use changed from Unknown to
Known