A critical remote-code-execution flaw in JetBrains TeamCity, the continuous-integration platform used by more than 30,000 development teams worldwide, is now under active exploitation by ransomware crews, the Cybersecurity and Infrastructure Security Agency confirmed on September 23, 2026. The bug, tracked as CVE-2026-63077, carries a CVSS v3.1 score of 9.8 out of 10 and lets an…