CVE-2021-37544 Deserialization in n/a

What is CVE-2021-37544?

CVE-2021-37544 is a critical unsafe deserialization vulnerability in Jetbrains Teamcity, published on 6 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

Weakness: CWE-502

Which versions are affected by CVE-2021-37544?

It affects 1 product.

Products include Jetbrains Teamcity.

How do I fix CVE-2021-37544?

No fix has been published for CVE-2021-37544 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2021-37544 being exploited?

There is no known exploitation of CVE-2021-37544 in the wild and no public exploit code.

Other vulnerabilities in Jetbrains Teamcity

• CVE-2026-63077 JetBrains TeamCity Deserialization of Untrusted Data Exploited Critical 9.8
• CVE-2024-27198 JetBrains TeamCity Authentication Bypass Exploited Critical 9.8
• CVE-2023-42793 JetBrains TeamCity Authentication Bypass Exploited Critical 9.8
• CVE-2024-27199 JetBrains TeamCity Relative Path Traversal Exploited High 7.3
• CVE-2024-23917 Auth bypass in TeamCity Critical 9.8

All Jetbrains Teamcity vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-2gmp-8pr5-3jc6.