What is CVE-2021-43199?

CVE-2021-43199 is a medium-severity vulnerability in Jetbrains Teamcity, classified under Incorrect Default Permissions. CVSS score: 5.3/10. Published 2021-11-09.

How severe is CVE-2021-43199?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Jetbrains Teamcity

CVE-2021-43199

In JetBrains TeamCity before 2021.1.2, permission checks in the Create Patch functionality are insufficient.

Published 2021-11-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.000

Affected products

Jetbrains Teamcity

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-43199?: CVE-2021-43199 is a medium-severity vulnerability in Jetbrains Teamcity, classified under Incorrect Default Permissions. CVSS score: 5.3/10. Published 2021-11-09.
How severe is CVE-2021-43199?: Medium severity. CVSS v3 base score is 5.3 out of 10.