07 Oct, 2026

CISA: Ransomware gangs now exploiting critical TeamCity flaw

​The U.S. Cybersecurity and Infrastructure Security Agency (CISA) warned federal agencies on Wednesday that ransomware gangs are now also exploiting a critical JetBrains TeamCity vulnerability patched in July. JetBrains patched the security flaw (tracked as CVE-2026-63077) on July 25 in TeamCity On-Premises versions 2025.11.7 and 2026.1.3, saying it is a critical authentication bypass vulnerability that […]

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JetBrains warns of critical TeamCity remote code execution flaw

JetBrains is warning of a critical authentication bypass vulnerability affecting TeamCity On-Premises that could be exploited to achieve remote code execution. The security issue is tracked as CVE-2026-63077 and can be leveraged by an attacker with HTTPS access to a TeamCity server to bypass authentication via the agent polling protocol and execute arbitrary operating system […]

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