{"history":[{"alert":0,"cve":"CVE-2026-58644","id":23387,"kind":"epss","observed_at":1794500401,"payload":"{\"date\": \"2026-11-12\", \"epss\": 0.15873, \"percentile\": 0.96931}"},{"alert":0,"cve":"CVE-2026-58644","id":20868,"kind":"epss","observed_at":1794327601,"payload":"{\"date\": \"2026-11-10\", \"epss\": 0.15873, \"percentile\": 0.96911}"},{"alert":0,"cve":"CVE-2026-58644","id":18713,"kind":"epss","observed_at":1794241201,"payload":"{\"date\": \"2026-11-09\", \"epss\": 0.15873, \"percentile\": 0.96907}"},{"alert":0,"cve":"CVE-2026-58644","id":16784,"kind":"epss","observed_at":1794154800,"payload":"{\"date\": \"2026-11-08\", \"epss\": 0.15873, \"percentile\": 0.96906}"},{"alert":0,"cve":"CVE-2026-58644","id":14762,"kind":"epss","observed_at":1794068402,"payload":"{\"date\": \"2026-11-07\", \"epss\": 0.15873, \"percentile\": 0.96903}"},{"alert":0,"cve":"CVE-2026-58644","id":12551,"kind":"epss","observed_at":1793982001,"payload":"{\"date\": \"2026-11-06\", \"epss\": 0.15873, \"percentile\": 0.96899}"},{"alert":0,"cve":"CVE-2026-58644","id":10536,"kind":"epss","observed_at":1793938800,"payload":"{\"date\": \"2026-11-05\", \"epss\": 0.15873, \"percentile\": 0.96898}"},{"alert":0,"cve":"CVE-2026-58644","id":8088,"kind":"epss","observed_at":1793809200,"payload":"{\"date\": \"2026-11-04\", \"epss\": 0.15873, \"percentile\": 0.96896}"},{"alert":0,"cve":"CVE-2026-58644","id":5871,"kind":"epss","observed_at":1793722800,"payload":"{\"date\": \"2026-11-03\", \"epss\": 0.15873, \"percentile\": 0.9689}"},{"alert":1,"cve":"CVE-2026-58644","id":3753,"kind":"cna","observed_at":1793679601,"payload":"{\"containers\": {\"adp\": [{\"metrics\": [{\"other\": {\"content\": {\"id\": \"CVE-2026-58644\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"total\"}], \"role\": \"CISA Coordinator\", \"timestamp\": \"2026-07-16T00:00:00+00:00\", \"version\": \"2.0.3\"}, \"type\": \"ssvc\"}}, {\"other\": {\"content\": {\"dateAdded\": \"2026-07-16\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-58644\"}, \"type\": \"kev\"}}], \"providerMetadata\": {\"dateUpdated\": \"2026-07-17T03:56:24.064Z\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\"}, \"references\": [{\"tags\": [\"government-resource\"], \"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-58644\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-07-16T00:00:00.000Z\", \"value\": \"CVE-2026-58644 added to CISA KEV\"}], \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"affected\": [{\"platforms\": [\"x64-based Systems\"], \"product\": \"Microsoft SharePoint Enterprise Server 2016\", \"vendor\": \"Microsoft\", \"versions\": [{\"lessThan\": \"16.0.5556.1005\", \"status\": \"affected\", \"version\": \"16.0.0\", \"versionType\": \"custom\"}]}, {\"platforms\": [\"x64-based Systems\"], \"product\": \"Microsoft SharePoint Server 2019\", \"vendor\": \"Microsoft\", \"versions\": [{\"lessThan\": \"16.0.10417.20153\", \"status\": \"affected\", \"version\": \"16.0.0\", \"versionType\": \"custom\"}]}, {\"platforms\": [\"x64-based Systems\"], \"product\": \"Microsoft SharePoint Server Subscription Edition\", \"vendor\": \"Microsoft\", \"versions\": [{\"lessThan\": \"16.0.19725.20384\", \"status\": \"affected\", \"version\": \"16.0.0\", \"versionType\": \"custom\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:microsoft:sharepoint_server_2016:*:*:*:*:enterprise:*:*:*\", \"versionEndExcluding\": \"16.0.5556.1005\", \"versionStartIncluding\": \"16.0.0\", \"vulnerable\": true}, {\"criteria\": \"cpe:2.3:a:microsoft:sharepoint_server_2019:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"16.0.10417.20153\", \"versionStartIncluding\": \"16.0.0\", \"vulnerable\": true}, {\"criteria\": \"cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*\", \"versionEndExcluding\": \"16.0.19725.20384\", \"versionStartIncluding\": \"16.0.0\", \"vulnerable\": true}], \"negate\": false, \"operator\": \"OR\"}]}], \"datePublic\": \"2026-07-14T14:00:00.000Z\", \"descriptions\": [{\"lang\": \"en-US\", \"value\": \"Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.\"}], \"metrics\": [{\"cvssV3_1\": {\"baseScore\": 9.8, \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C\", \"version\": \"3.1\"}, \"format\": \"CVSS\", \"scenarios\": [{\"lang\": \"en-US\", \"value\": \"GENERAL\"}]}], \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-502\", \"description\": \"CWE-502: Deserialization of Untrusted Data\", \"lang\": \"en-US\", \"type\": \"CWE\"}]}], \"providerMetadata\": {\"dateUpdated\": \"2026-11-01T17:33:12.922Z\", \"orgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"shortName\": \"microsoft\"}, \"references\": [{\"name\": \"Microsoft SharePoint Remote Code Execution Vulnerability\", \"tags\": [\"vendor-advisory\", \"patch\"], \"url\": \"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58644\"}], \"title\": \"Microsoft SharePoint Remote Code Execution Vulnerability\"}}, \"cveMetadata\": {\"assignerOrgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"assignerShortName\": \"microsoft\", \"cveId\": \"CVE-2026-58644\", \"datePublished\": \"2026-07-14T17:05:37.431Z\", \"dateReserved\": \"2026-07-01T21:14:44.618Z\", \"dateUpdated\": \"2026-11-01T17:33:12.922Z\", \"state\": \"PUBLISHED\"}, \"dataType\": \"CVE_RECORD\", \"dataVersion\": \"5.2\"}"},{"alert":0,"cve":"CVE-2026-58644","id":3564,"kind":"epss","observed_at":1793665375,"payload":"{\"date\": \"2026-11-02\", \"epss\": 0.15873, \"percentile\": 0.96887}"},{"alert":1,"cve":"CVE-2026-58644","id":120,"kind":"kev","observed_at":1793665375,"payload":"{\"cveID\": \"CVE-2026-58644\", \"cwes\": [\"CWE-502\"], \"dateAdded\": \"2026-07-16\", \"dueDate\": \"2026-07-19\", \"forensicTriage\": \"Yes\", \"knownRansomwareCampaignUse\": \"Unknown\", \"notes\": \"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58644 ; 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-2026-58644\", \"product\": \"SharePoint\", \"requiredAction\": \"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\\u2019s \\u201cForensics Triage Requirements\\u201d (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.\", \"shortDescription\": \"Microsoft SharePoint contains a deserialization of untrusted data vulnerability that allows an unauthorized attacker to execute code over a network.\", \"vendorProject\": \"Microsoft\", \"vulnerabilityName\": \"Microsoft SharePoint Deserialization of Untrusted Data Vulnerability\"}"}],"record":{"affected":[{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Enterprise Server 2016","vendor":"Microsoft","versions":[{"lessThan":"16.0.5556.1005","status":"affected","version":"16.0.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server 2019","vendor":"Microsoft","versions":[{"lessThan":"16.0.10417.20153","status":"affected","version":"16.0.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server Subscription Edition","vendor":"Microsoft","versions":[{"lessThan":"16.0.19725.20384","status":"affected","version":"16.0.0","versionType":"custom"}]}],"cna":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-58644","options":[{"Exploitation":"active"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-07-16T00:00:00+00:00","version":"2.0.3"},"type":"ssvc"}},{"other":{"content":{"dateAdded":"2026-07-16","reference":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-58644"},"type":"kev"}}],"providerMetadata":{"dateUpdated":"2026-07-17T03:56:24.064Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"references":[{"tags":["government-resource"],"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-58644"}],"timeline":[{"lang":"en","time":"2026-07-16T00:00:00.000Z","value":"CVE-2026-58644 added to CISA KEV"}],"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Enterprise Server 2016","vendor":"Microsoft","versions":[{"lessThan":"16.0.5556.1005","status":"affected","version":"16.0.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server 2019","vendor":"Microsoft","versions":[{"lessThan":"16.0.10417.20153","status":"affected","version":"16.0.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server Subscription Edition","vendor":"Microsoft","versions":[{"lessThan":"16.0.19725.20384","status":"affected","version":"16.0.0","versionType":"custom"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:microsoft:sharepoint_server_2016:*:*:*:*:enterprise:*:*:*","versionEndExcluding":"16.0.5556.1005","versionStartIncluding":"16.0.0","vulnerable":true},{"criteria":"cpe:2.3:a:microsoft:sharepoint_server_2019:*:*:*:*:*:*:*:*","versionEndExcluding":"16.0.10417.20153","versionStartIncluding":"16.0.0","vulnerable":true},{"criteria":"cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*","versionEndExcluding":"16.0.19725.20384","versionStartIncluding":"16.0.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"datePublic":"2026-07-14T14:00:00.000Z","descriptions":[{"lang":"en-US","value":"Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network."}],"metrics":[{"cvssV3_1":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en-US","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-11-01T17:33:12.922Z","orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","shortName":"microsoft"},"references":[{"name":"Microsoft SharePoint Remote Code Execution Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58644"}],"title":"Microsoft SharePoint Remote Code Execution Vulnerability"}},"cveMetadata":{"assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","assignerShortName":"microsoft","cveId":"CVE-2026-58644","datePublished":"2026-07-14T17:05:37.431Z","dateReserved":"2026-07-01T21:14:44.618Z","dateUpdated":"2026-11-01T17:33:12.922Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"cna_checked":1794111601,"cve":"CVE-2026-58644","description":"Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.","epss":{"date":"2026-11-12","epss":0.15873,"percentile":0.96931},"epss_checked":1794522003,"first_seen":1793665375,"kev":{"cveID":"CVE-2026-58644","cwes":["CWE-502"],"dateAdded":"2026-07-16","dueDate":"2026-07-19","forensicTriage":"Yes","knownRansomwareCampaignUse":"Unknown","notes":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58644 ; 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-2026-58644","product":"SharePoint","requiredAction":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (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.","shortDescription":"Microsoft SharePoint contains a deserialization of untrusted data vulnerability that allows an unauthorized attacker to execute code over a network.","vendorProject":"Microsoft","vulnerabilityName":"Microsoft SharePoint Deserialization of Untrusted Data Vulnerability"},"kev_checked":1794522003,"products":"Microsoft Microsoft SharePoint Enterprise Server 2016, Microsoft Microsoft SharePoint Server 2019, Microsoft Microsoft SharePoint Server Subscription Edition","references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58644","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-58644"],"score":{"baseScore":9.8,"baseSeverity":"CRITICAL","provider":"microsoft","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C","version":"3.1"},"solutions":"","state":"PUBLISHED","title":"Microsoft SharePoint Remote Code Execution Vulnerability","updated_at":1794500401,"workarounds":""},"sources":[]}