What is CVE-2021-37545?

CVE-2021-37545 is a high-severity vulnerability in Jetbrains Teamcity, classified under Improper Authentication. CVSS score: 7.5/10. Published 2021-08-06.

How severe is CVE-2021-37545?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Jetbrains Teamcity

CVE-2021-37545

In JetBrains TeamCity before 2021.1.1, insufficient authentication checks for agent requests were made.

Vulnerability class: Broken Authentication

Published 2021-08-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.009 (57.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Jetbrains Teamcity

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

blog.jetbrains.com/blog/2021/08/05/jetbrains-security-bulletin-q2-2021/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-37545?: CVE-2021-37545 is a high-severity vulnerability in Jetbrains Teamcity, classified under Improper Authentication. CVSS score: 7.5/10. Published 2021-08-06.
How severe is CVE-2021-37545?: High severity. CVSS v3 base score is 7.5 out of 10.