https://poc.intelseclab.com/tags/apt31/Latest proof-of-concept entries.Hugoen-usSun, 17 May 2026 00:00:00 +0000https://poc.intelseclab.com/pocs/web/2026-05-17_toolshell-sharepoint-chain/Sun, 17 May 2026 00:00:00 +0000https://poc.intelseclab.com/pocs/web/2026-05-17_toolshell-sharepoint-chain/Critical severity — web · CVE-2025-53770, CVE-2025-53771, CVE-2025-49704, CVE-2025-49706. Status: Weaponized. Affects: Microsoft SharePoint Server. Tags: RCE, SharePoint, unauthenticated, deserialization, auth-bypass, APT27, APT31, ransomware, Windows, IIS.webCriticalRCESharePointunauthenticateddeserializationauth-bypassAPT27APT31ransomwareWindowsIIS