New Progress ShareFile flaws can be chained in pre-auth RCE attacks

Two vulnerabilities in Progress ShareFile, an enterprise-grade secure file transfer solution, can be chained to enable unauthenticated file exfiltration from affected environments. Progress ShareFile is a document sharing and collaboration product typically used by large and mid-sized companies. Such solutions are an attractive target for ransomware actors, as previously seen in Clop data-theft attacks exploiting bugs in Accellion FTA, SolarWinds Serv-U, Gladinet CentreStack, GoAnywhere MFT, MOVEit Transfer, and Cleo. Researchers at offensive security company watchTowr discovered an authentication bypass (CVE-2026-2699) and a remote code execution (CVE-2026-2701) in the Storage Zones Controller (SZC) component present in branch 5.x of Progress ShareFile. SZC gives customers more control over their data by allowing them to store it on their infrastructure (either on-prem or in a third-party cloud provider) or on the Progress systems. Following watchTowr's responsible disclosure, the problems have been addressed in Progress ShareFile 5.12.4, released on March 10. In a report today, watchTowr researchers explain that the attack begins by exploiting the authentication bypass issue, CVE-2026-2699, which gives access to the ShareFile admin interface due to improper handling of HTTP redirects. Once inside, an attacker can modify Storage Zone configuration settings, including file storage paths and security-sensitive parameters such as the zone passphrase and related secrets. By exp...