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Dark blue security graphic for a SharePoint RCE remediation runbook

Engineering · Aug 2, 2026 · 13 min read

2 actively exploited SharePoint RCEs (CVE-2026-50522, CVE-2026-58644): patch, rotate keys, hunt persistence

Two unauthenticated SharePoint Server RCEs, CVE-2026-50522 and CVE-2026-58644 (both CVSS 9.8), are exploited in the wild. Patching alone will not evict an attacker who stole your machine keys.

Manu Shukla

#sharepoint #CVE-2026-50522 #CVE-2026-58644