{"id":"CVE-2026-77900","title":"Missing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network.","summary":"Missing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network.","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-306"],"published":"2026-10-08","updated":"2026-10-10","sourceUpdated":"2026-10-10T04:18:14.030","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77900","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77900","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"epss":0.0072,"epssPercentile":0.53727,"ingestedAt":"2026-10-09T00:19:50.974Z","vendor":"Microsoft","product":"Azure App Service for Linux","affected":["azure_app_service_for_linux -"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-09T00:00:00+00:00"},"slug":"CVE-2026-77900","body":"## Overview\n\nMissing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}