{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40357","assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","state":"PUBLISHED","assignerShortName":"microsoft","dateReserved":"2026-04-11T23:06:15.613Z","datePublished":"2026-05-12T16:59:16.442Z","dateUpdated":"2026-05-15T17:13:15.767Z"},"containers":{"cna":{"title":"Microsoft SharePoint Server Remote Code Execution Vulnerability","datePublic":"2026-05-12T14:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:sharepoint_server_2016:*:*:*:*:enterprise:*:*:*","versionStartIncluding":"16.0.0","versionEndExcluding":"16.0.5552.1002"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:sharepoint_server_2019:*:*:*:*:*:*:*:*","versionStartIncluding":"16.0.0","versionEndExcluding":"16.0.10417.20128"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*","versionStartIncluding":"16.0.0","versionEndExcluding":"16.0.19725.20280"}]}]}],"affected":[{"vendor":"Microsoft","product":"Microsoft SharePoint Enterprise Server 2016","platforms":["x64-based Systems"],"versions":[{"version":"16.0.0","lessThan":"16.0.5552.1002","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Microsoft SharePoint Server 2019","platforms":["x64-based Systems"],"versions":[{"version":"16.0.0","lessThan":"16.0.10417.20128","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Microsoft SharePoint Server Subscription Edition","platforms":["x64-based Systems"],"versions":[{"version":"16.0.0","lessThan":"16.0.19725.20280","versionType":"custom","status":"affected"}]}],"descriptions":[{"value":"Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","lang":"en-US"}],"problemTypes":[{"descriptions":[{"description":"CWE-502: Deserialization of Untrusted Data","lang":"en-US","type":"CWE","cweId":"CWE-502"}]}],"providerMetadata":{"orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","shortName":"microsoft","dateUpdated":"2026-05-15T17:13:15.767Z"},"references":[{"name":"Microsoft SharePoint Server Remote Code Execution Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40357"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","baseSeverity":"HIGH","baseScore":8.8,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-13T03:57:20.741366Z","id":"CVE-2026-40357","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-13T10:04:55.370Z"}}]}}