{"cveID":"CVE-2026-56164","vendorProject":"Microsoft","product":"SharePoint Server","vulnerabilityName":"Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability","dateAdded":"2026-07-14","shortDescription":"Microsoft SharePoint contains a missing authentication for critical function vulnerability that allows an unauthorized attacker to elevate privileges over a network.","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.","dueDate":"2026-07-17","knownRansomwareCampaignUse":"Unknown","notes":"https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-56164 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-56164","cwes":["CWE-306"],"year":2026,"state":"unmapped","stale_reasons":[],"mappings":[],"techniques":[],"mapping_types":[],"has_exploitation_technique":false,"mapping_attack_versions":[],"mapping_domains":[],"sigma_coverage":null,"sigma_rules_tagged_cve":[],"added_after_mapping_snapshot":true,"_source":"kevmap","_built":"2026-08-23 05:47 UTC","_attack_version":"19.2"}