CVE-2026-63077 - 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.
- Severity
- critical
- Product
- JetBrains TeamCity
- Published
- 2026-08-05
- EPSS
- 0.896
- CISA KEV
- Known exploited
- Ransomware
- Known campaign use
References and validation
- https://github.com/search?q=CVE-2026-63077&type=repositories
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-63077.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2026-63077
Entries are refreshed from CISA KEV and FIRST EPSS. Validate applicability before testing.