What’s Vulnerable › Vulnerabilities

CVE-2021-37544

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-06 · updated 2026-06-17
• Weakness: CWE-502

Description

In JetBrains TeamCity before 2020.2.4, there was an insecure deserialization.

Affected products

• JetBrains TeamCity: before 2020.2.4 — fixed in 2020.2.4

How to fix

Upgrade to a fixed version: JetBrains TeamCity 2020.2.4. Check the vendor advisory for mitigations.

References

• https://blog.jetbrains.com/blog/2021/08/05/jetbrains-security-bulletin-q2-2021/
• https://blog.jetbrains.com/blog/2021/08/05/jetbrains-security-bulletin-q2-2021/

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