{"data":{"id":"072adbe2-285c-4fa2-80dd-79c35c369848","title":"CVE-2026-50522: Microsoft SharePoint Deserialization of Untrusted Data Vulnerability ","summary":"Microsoft SharePoint has a deserialization of untrusted data vulnerability (a flaw where the software unsafely processes data from untrusted sources, potentially allowing attackers to run malicious code). An unauthorized attacker could exploit this over a network to execute code on affected systems. This vulnerability is currently being actively exploited in real-world attacks.","solution":"Apply mitigations in accordance with vendor instructions from Microsoft, following CISA's BOD 26-04 guidance for prioritizing security updates based on risk. For cloud services, follow applicable BOD 26-04 guidance or discontinue use of the product if mitigations are unavailable. Stakeholders must evaluate each system's internet exposure and ensure adherence to BOD 26-04 patching guidelines by the due date of 2026-07-25. See Microsoft Security Response Center (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50522) for specific vendor instructions.","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-50522","publishedAt":"2026-07-22T00:00:00.000Z","cveId":"CVE-2026-50522","cweIds":["CWE-502"],"cvssScore":null,"cvssSeverity":null,"severity":"high","attackType":["supply_chain"],"issueType":"vulnerability","affectedPackages":null,"affectedVendors":["Microsoft"],"affectedVendorsRaw":["Microsoft SharePoint"],"classifierModel":"claude-haiku-4-5-20251001","classifierPromptVersion":"v3","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":"active","epssScore":0.20346,"patchAvailable":true,"disclosureDate":"2026-07-22T00:00:00.000Z","capecIds":["CAPEC-586"],"crossRefCount":0,"attackSophistication":"moderate","impactType":["integrity","confidentiality","availability"],"aiComponentTargeted":null,"llmSpecific":false,"classifierConfidence":0.72,"researchCategory":null,"atlasIds":["AML.T0010"]}}