{"id":"CVE-2026-21537","aliases":["EUVD-2026-7336","GHSA-c8x6-p29h-wm35"],"status":"published","title":"Microsoft Defender for Endpoint Linux Extension Remote Code Execution Vulnerability","description":"Improper control of generation of code ('code injection') in Microsoft Defender for Linux allows an unauthorized attacker to execute code over an adjacent network.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00525,"percentile":0.44953,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-94"],"published":"2026-02-10T17:51:32Z","modified":"2026-08-19T16:26:03Z","products":[{"vendor":"microsoft","product":"defender_for_endpoint"},{"vendor":"microsoft","product":"microsoft defender for endpoint for linux"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21537","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21537"},{"url":"https://github.com/advisories/GHSA-c8x6-p29h-wm35"}],"sources":{"cve":[{"id":"CVE-2026-21537","title":"Microsoft Defender for Endpoint Linux Extension Remote Code Execution Vulnerability","description":"Improper control of generation of code ('code injection') in Microsoft Defender for Linux allows an unauthorized attacker to execute code over an adjacent network.","status":"published","published":"2026-02-10T17:51:32.87Z","modified":"2026-08-19T16:26:03.097Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T13:41:42.05254Z"}],"euvd":[{"id":"EUVD-2026-7336","description":"Improper control of generation of code ('code injection') in Microsoft Defender for Linux allows an unauthorized attacker to execute code over an adjacent network.","status":"published","published":"2026-02-10T17:51:32Z","modified":"2026-08-19T16:26:03Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T18:01:44.172516Z"}],"ghsa":[{"id":"GHSA-c8x6-p29h-wm35","title":"Improper control of generation of code ('code injection') in Microsoft Defender for Linux allows...","description":"Improper control of generation of code ('code injection') in Microsoft Defender for Linux allows an unauthorized attacker to execute code over an adjacent network.","status":"published","published":"2026-02-10T18:30:42Z","modified":"2026-02-10T18:30:54Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:06:07.875228Z"}],"nvd":[{"id":"CVE-2026-21537","description":"Improper control of generation of code ('code injection') in Microsoft Defender for Linux allows an unauthorized attacker to execute code over an adjacent network.","status":"published","published":"2026-02-10T18:16:35.97Z","modified":"2026-06-17T10:18:48.35Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:12:05.908608Z"}]}}