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Vulnerability

CVE-2026-63077 — JetBrains TeamCity Deserialization of Untrusted Data Vulnerability

Exploited in the wild Ransomware 1 story · 1 outlet

Official record (cve.org)NVDCVE watch

Impacted if

JetBrains TeamCity

CISA Known Exploited Vulnerabilities

Added on 2026-08-05, federal remediation due 2026-08-08. JetBrains TeamCity contains a deserialization of untrusted data vulnerability that could allow unauthenticated remote code execution via the agent polling protocol.

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

First seen by AX-NEWS · latest story . Severity: NVD, or the CVE record while the NVD has not scored it. This product uses data from the NVD API but is not endorsed or certified by the NVD.