{"id":"CVE-2026-65815","aliases":["EUVD-2026-56449","GHSA-83pg-fr4f-gxq5"],"status":"published","title":"Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability","description":"Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.","severity":{"version":"3.1","score":8.8,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01694,"percentile":0.77292,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2026-08-11T17:05:05Z","modified":"2026-10-30T17:20:51Z","products":[{"vendor":"microsoft","product":"dynamics_365"},{"vendor":"microsoft","product":"microsoft dynamics 365 (on-premises) version 9.1"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65815","tags":["vendor-advisory","patch","Vendor Advisory","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65815"},{"url":"https://github.com/advisories/GHSA-83pg-fr4f-gxq5"}],"sources":{"cve":[{"id":"CVE-2026-65815","title":"Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability","description":"Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.","status":"published","published":"2026-08-11T17:05:05.569Z","modified":"2026-10-30T17:20:51.72Z","cvss":[{"version":"3.1","score":8.8,"vector":"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","level":"high","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T13:37:13.934727Z"}],"euvd":[{"id":"EUVD-2026-56449","description":"Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.","status":"published","published":"2026-08-11T17:05:05Z","modified":"2026-10-30T17:20:51Z","cvss":[{"version":"3.1","score":8.8,"vector":"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","level":"high"}],"updated_at":"2026-11-02T16:59:04.296921Z"}],"ghsa":[{"id":"GHSA-83pg-fr4f-gxq5","title":"Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized...","description":"Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.","status":"published","published":"2026-08-11T18:31:41Z","modified":"2026-08-11T18:31:49Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:10:20.045782Z"}],"nvd":[{"id":"CVE-2026-65815","description":"Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.","status":"published","published":"2026-08-11T17:19:01.157Z","modified":"2026-10-24T16:10:00.153Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:12:36.880938Z"}]}}