Another SharePoint RCE exploited: Patch, then rotate your machine keys (CVE-2026-50522)
Attackers are exploiting a critical SharePoint remote code execution (RCE) vulnerability (CVE-2026-50522) to extract the servers’ IIS machine keys. “WatchTowr is observing active exploitation of CVE-2026-50522 against on-premise Microsoft SharePoint deployments following the release of public exploit code, with attackers stealing machine keys to retain long-term access,” the offensive security company warned on Tuesday. WatchTowr’s global honeypot network registered successful exploitation attempts on July 20, mere hours after the release of the proof-of-concept exploit and … More
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