CVE-2019-0604 Microsoft CVE debrief

Who should care

Organizations running Microsoft SharePoint, especially security teams, patch managers, and administrators responsible for business-critical or internet-facing deployments.

Technical summary

The supplied official records identify CVE-2019-0604 as a Microsoft SharePoint remote code execution vulnerability. CISA’s KEV entry classifies it as a known exploited vulnerability, notes known ransomware campaign use, and directs defenders to apply updates per vendor instructions.

Defensive priority

High. This is a CISA KEV-listed vulnerability with known ransomware campaign use, so remediation should be prioritized over routine patching.

Recommended defensive actions

• Apply Microsoft updates per vendor instructions as soon as possible.
• Confirm which SharePoint instances are affected, including any externally reachable deployments.
• Verify that patching was completed and that the affected systems are no longer exposed.
• Review security monitoring and incident response records for signs of exploitation on affected SharePoint systems.
• Use the CISA KEV due date as urgency context; CISA listed the item on 2021-11-03 with a due date of 2022-05-03.

Evidence notes

The corpus only supports the following facts: CVE-2019-0604 is a Microsoft SharePoint remote code execution vulnerability; CISA added it to the KEV catalog on 2021-11-03; CISA marks known ransomware campaign use as "Known"; and the required action is to apply updates per vendor instructions. No CVSS score is provided in the supplied corpus.

Official resources