Act
archived
CISA: Three SharePoint Server flaws actively exploited in the wild
- Engineer — Act: CISA warning indicates KEV-level active exploitation against internet-exposed on-premises SharePoint Server. Apply Microsoft’s patches immediately and verify no externally reachable SharePoint instances remain unpatched.
- SOC/IR — Act: Active exploitation of internet-facing SharePoint means assume-breach posture is warranted; hunt for post-exploitation activity (lateral movement, credential access) on SharePoint hosts since the earliest known exploitation date and review IIS/ULS logs for anomalous request patterns.
- Leader — Act: Confirm whether the organization runs on-premises SharePoint Server exposed to the internet, and get a patching status update from engineering this week — active exploitation with a CISA advisory is the kind of event that surfaces in board or customer security reviews.
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