What is CVE-2025-59455?

CVE-2025-59455 is a medium-severity vulnerability in Jetbrains Teamcity, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.2/10. Published 2025-09-17.

How severe is CVE-2025-59455?

Medium severity. CVSS v3 base score is 4.2 out of 10.

Vulnerability in Jetbrains Teamcity

CVE-2025-59455

In JetBrains TeamCity before 2025.07.2 project isolation bypass was possible due to race condition

Vulnerability class: Race Condition

Published 2025-09-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (32.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Jetbrains Teamcity — versions 0

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

www.jetbrains.com/privacy-security/issues-fixed/ (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2025-59455?: CVE-2025-59455 is a medium-severity vulnerability in Jetbrains Teamcity, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.2/10. Published 2025-09-17.
How severe is CVE-2025-59455?: Medium severity. CVSS v3 base score is 4.2 out of 10.