CVE-2026-63077
In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was...
In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol
- Record
CVE-2026-63077- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
EUVDEUVD-2026-49369
In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol
- Record
EUVD-2026-49369- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-94gx-v738-fx9w
In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was...
In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol
- Record
GHSA-94gx-v738-fx9w- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
CISA KEV No score
JetBrains TeamCity Deserialization of Untrusted Data Vulnerability
JetBrains TeamCity contains a deserialization of untrusted data vulnerability that could allow unauthenticated remote code execution via the agent polling protocol.
- Record
CVE-2026-63077- Weakness
- CWE-502
- Updated
- 2026-11-02
NVD
In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol
- Record
CVE-2026-63077- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Metasploit | JetBrains TeamCity Agent Polling Unauthenticated Remote Code Execution | 2026-07-27 |
| PoC in GitHub | unveiledhistory49/teamcity-cve-2026-63077-remediation | 2026-07-30 |
| PoC in GitHub | sfewer-r7/CVE-2026-63077 | 2026-08-07 |
| PoC in GitHub | AnggaTechI/CVE-2026-63077 | 2026-08-08 |
| PoC in GitHub | BoredHackerBlog/teamcity-CVE-2026-63077-pcap | 2026-08-08 |
| PoC in GitHub | bakos-sandor-nx/teamcity-cve-2026-63077-remediation | 2026-08-19 |
| PoC in GitHub | 0xCyp1337/CVE-2026-63077 | 2026-09-04 |
| PoC in GitHub | basesixtythree/B63-POC-CVE-2026-63077 | 2026-10-22 |
| Nuclei | JetBrains TeamCity < 2026.1.3, 2025.11.7 - Remote Code Execution |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation, exploits | ||
| first indexed | CVE List, EUVD, GitHub Advisories, CISA KEV, Metasploit, Nuclei, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-63077 is a critical vulnerability (CVSS 9.8) in Jetbrains Teamcity, published July 27, 2026. CISA lists it as known to be exploited, since August 5, 2026. EUVD reports exploitation since August 5, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 94.9%, the 99th percentile. No source names a fixed version.