Status: KEV | Advisory ID: CVE-2026-63077
| CVE | CVE-2026-63077 |
| CVSS | CVSS 9.8 (Critical). |
| Affected products | JetBrains TeamCity |
| Exploitation status | Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation. |
| Classified as | CWE-502 (Deserialization of Untrusted Data) |
| KEV listing | Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-08-05. |
| Exploitation prediction (EPSS) | 87% probability of exploitation in the next 30 days (100% percentile) -- FIRST.org's EPSS model. |
| Federal remediation deadline | 2026-08-08 (CISA KEV, Binding Operational Directive). |
JetBrains TeamCity contains a deserialization of untrusted data vulnerability that could allow unauthenticated remote code execution via the agent polling protocol.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-63077 |