{"cvss":0.0,"datePublished":"2026-07-01T00:00:00Z","dateUpdated":"2026-07-01T00:00:00Z","description":"Microsoft SharePoint Server contains a deserialization of untrusted data vulnerability which allows an authorized attacker to execute code over a network.","dueDate":"2026-07-04T00:00:00Z","id":"CVE-2026-45659","kev_catalogs":["vulncheck"],"knownRansomwareCampaignUse":"Known","product":"SharePoint","requiredAction":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","severity":"CRITICAL","source":"vulncheck_kev","title":"Microsoft SharePoint Server Deserialization of Untrusted Data Vulnerability","vendor":"Microsoft"}