{"data":{"id":"24263335-2235-4f2e-af41-ac8bfb4e132a","title":"CVE-2026-55040: Microsoft SharePoint Weak Authentication Vulnerability","summary":"Microsoft SharePoint has a weak authentication vulnerability that allows attackers to bypass security features over a network without proper credentials. This flaw is currently being exploited by real attackers. Organizations must apply patches according to Microsoft's instructions and follow CISA's BOD 26-04 guidance (a federal directive for prioritizing security updates), or stop using the product if no fix is available.","solution":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA's BOD 26-04 guidance. For cloud services, follow applicable BOD 26-04 guidance or discontinue use of the product if mitigations are unavailable. See Microsoft Security Response Center (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55040) for specific patches. Due date for patching: 2026-08-21.","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55040","publishedAt":"2026-08-18T00:00:00.000Z","cveId":"CVE-2026-55040","cweIds":["CWE-1390"],"cvssScore":null,"cvssSeverity":null,"severity":"high","attackType":["other"],"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":0.03971,"patchAvailable":true,"disclosureDate":"2026-08-18T00:00:00.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["confidentiality","integrity"],"aiComponentTargeted":null,"llmSpecific":false,"classifierConfidence":0.72,"researchCategory":null,"atlasIds":null}}