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JetBrains Patches Critical TeamCity Flaw Allowing Server Takeover

Security Affairs
CVEVulnerabilityUpdateCritical

Overview

JetBrains has addressed a significant security vulnerability in its TeamCity software, identified as CVE-2026-63077, which has a CVSS score of 9.8. This flaw allows unauthenticated attackers to execute arbitrary code on affected on-premise servers, posing a serious risk to organizations using TeamCity. All versions of TeamCity On-Premises are vulnerable, which means that a wide range of users could be impacted if they do not take immediate action. The potential for server takeover highlights the importance of applying security updates promptly to safeguard systems. JetBrains has released patches to mitigate this vulnerability, urging users to update their installations as soon as possible.

Key Takeaways

  • Affected Systems: TeamCity On-Premises (all versions)
  • Action Required: JetBrains has released security updates for TeamCity On-Premises to address this vulnerability.
  • Timeline: Newly disclosed

Original Article Summary

JetBrains patched a critical TeamCity flaw (CVE-2026-63077) enabling unauthenticated code execution on affected on-premise servers. JetBrains has released security updates for TeamCity On-Premises after discovering a critical vulnerability, tracked as CVE-2026-63077 (CVSS score of 9.8). The flaw could allow unauthenticated attackers to execute arbitrary commands on affected servers. All on-premise versions are impacted, while TeamCity […]

Impact

TeamCity On-Premises (all versions)

Exploitation Status

The exploitation status is currently unknown. Monitor vendor advisories and security bulletins for updates.

Timeline

Newly disclosed

Remediation

JetBrains has released security updates for TeamCity On-Premises to address this vulnerability. Users are advised to apply these updates immediately to protect their servers from potential attacks.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Vulnerability, Update, and 1 more.

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