CVE-2026-63077 KEV
9.8
CRITICAL · CVSS 3.1 · EPSS 9.8% (pctl 95)
Patch first
On CISA KEV — known exploited in the wild, due 2026-08-08.
Description
In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 9.76% — more likely to be exploited than 95% of all CVEs |
| Weakness | CWE-502 |
| On CISA KEV | yes — remediate by 2026-08-08 |
| Public exploit | none known |
| Published | 2026-07-27 |
| Last modified | 2026-08-06 |
CISA KEV
| Name | JetBrains TeamCity Deserialization of Untrusted Data Vulnerability |
|---|---|
| Added | 2026-08-05 |
| Due | 2026-08-08 |
| Vendor / product | JetBrains / TeamCity |
| Ransomware use | known |
Affected (1)
| Vendor | Product |
|---|---|
| jetbrains | teamcity |
References
→ the Explorer · watch your stack · NVD