{"id":"CVE-2026-77900","aliases":["EUVD-2026-95394","GHSA-9x98-433f-w7ff"],"status":"published","title":"Azure App Service Remote Code Execution Vulnerability","description":"Missing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0072,"percentile":0.54258,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2026-10-08T22:15:30Z","modified":"2026-11-10T20:46:41Z","products":[{"vendor":"microsoft","product":"azure app service for linux"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77900","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77900"},{"url":"https://github.com/advisories/GHSA-9x98-433f-w7ff"}],"sources":{"cve":[{"id":"CVE-2026-77900","title":"Azure App Service Remote Code Execution Vulnerability","description":"Missing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-08T22:15:30.299Z","modified":"2026-11-10T20:46:41.255Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna"}],"cwes":["CWE-306"],"updated_at":"2026-11-10T22:18:28.707469Z"}],"euvd":[{"id":"EUVD-2026-95394","description":"Missing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-08T22:15:30Z","modified":"2026-11-10T20:46:41Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical"}],"updated_at":"2026-11-10T22:23:55.284051Z"}],"ghsa":[{"id":"GHSA-9x98-433f-w7ff","title":"Missing authentication for critical function in Azure App Service allows an unauthorized attacker...","description":"Missing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-09T00:31:48Z","modified":"2026-10-09T00:31:56Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T15:12:59.31428Z"}],"nvd":[{"id":"CVE-2026-77900","description":"Missing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-08T23:17:03.107Z","modified":"2026-10-10T04:18:14.03Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:12:55.473789Z"}]}}