AI Summary

CISA added CVE‑2026‑63077, a deserialization flaw in JetBrains TeamCity, to its Known Exploited Vulnerabilities (KEV) Catalog after confirming active exploitation. The vulnerability is highlighted as a common attack vector that can give attackers total control of affected systems. Under Binding Operational Directive 26‑04, federal agencies must prioritize rapid remediation of such high‑risk KEV entries on publicly exposed assets and verify whether compromise occurred before patching.

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