Vulnerabilities Progress Confirms Zero-Day Vulnerability Behind ShareFile Disruption The company has rolled out a fix and is restoring access for Storage Zones Controller customers who apply it. By Ionut Arghire | July 15, 2026 (5:48 AM ET) Flipboard Reddit Whatsapp Whatsapp Email Progress Software has confirmed that a zero-day vulnerability was behind the recent ShareFile Storage Zones Controller disruption and that access to the service is being restored. The confirmation comes two days after the company disabled access to ShareFile accounts for all customers using Storage Zones Controllers, citing ‘a credible external security threat’. “As of Tuesday, July 14th, access has been restored for Progress ShareFile Storage Zones Controller customers following the service disruption we communicated previously,” Progress told SecurityWeek . The company explained that it prompted customers to shut down their servers running Storage Zones Controllers due to a high-severity vulnerability in versions 5.x and 6.x of the product. “We developed and released patched versions to customers, and once patched, these customers’ Storage Zones Controllers will be operational,” Progress said. The company has not shared details on the vulnerability and has yet to respond to SecurityWeek’s follow-up questions, but said it is not aware of any customer compromise. Advertisement. Scroll to continue reading. “At this time, we have no evidence of unauthorized access to any ShareFile customer account or data, and we have not identified any active threat,” the company said. In private communication to its customers, Progress said that the security defect is a path traversal bug exploitable by attackers with administrative privileges. “An authenticated administrative user can read arbitrary files accessible to the application’s service account, write threat actor-controlled content to arbitrary directories, or enumerate the server filesystem layout,” a copy of the email shared on Reddit reads. According to WatchTowr founder and CEO Benjamin Harris, Progress’s description of the issue and its withholding of details suggest there might be more to the story. “Vulnerabilities that already assume an attacker has administrative access do not typically trigger such an aggressive response. So what’s the missing piece? Is there more to the attack than has been disclosed? Has Progress observed attacker activity that warrants a more aggressive response?” Harris said. Defenders are advised to assume the worst, to update their ShareFile Storage Zone Controllers immediately, and to assume that exposed systems may have been compromised. “Don’t assume that installing a patch is the end of the story. When a vendor tells customers to disconnect servers from the internet and then ships a patch days later, for an admin-only exploitable vulnerability no less, no one will be blamed for pondering,” Harris said. Related: Critical Vulnerabilities Patched With Fresh Chrome 150, Firefox 152 Updates Related: SAP Patches Critical Vulnerabilities in NetWeaver, Approuter, Commerce Cloud Related: RabbitMQ Vulnerability Threatens Enterprise Systems Related: 15-Year-Old Linux Vulnerability ‘GhostLock’ Earns Researchers $92k From Google Written By Ionut Arghire Ionut Arghire is an international correspondent for SecurityWeek. Daily Briefing Newsletter Subscribe to the SecurityWeek Email Briefing for the latest cybersecurity threats, trends, and expert insights. 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