Progress ShareFile Storage Zones Controller (SZC) 5.x is exposed to a pre-authentication RCE vulnerability chain (CVE-2026-2699 and CVE-2026-2701, CVSS 9.8) that requires no credentials, with an EPSS score at the 93rd percentile and a product history of mass exploitation in the 2023 CVE-2023-24489 campaign confirming sustained threat actor interest. SZC serves as the bridge between cloud ShareFile tenants and on-premises storage, making successful exploitation a direct lateral movement path into internal networks. Organizations should restrict inbound SZC access immediately, apply the Progress-issued patch (verify version via the official Progress security advisory), and conduct post-patch integrity checks for webshells, unauthorized scheduled tasks, and anomalous cloud-to-on-premises data staging.