{"id":"CVE-2026-55366","title":"In IP Multimedia Subsystem, there is a possible authentication bypass due to a logic error in the code","summary":"In IP Multimedia Subsystem, there is a possible authentication bypass due to a logic error in the code. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for …","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-693"],"vendor":"google","product":"android","affected":["android"],"published":"2026-09-15","updated":"2026-09-21","sourceUpdated":"2026-09-21T17:19:38.187","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55366","references":[{"url":"https://source.android.com/docs/security/bulletin/pixel/2026/2026-09-01","label":"dsap-vuln-management@google.com"}],"tags":["nvd","cve.org"],"epss":0.00361,"epssPercentile":0.29778,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-09-16T15:39:04.372873Z"},"ingestedAt":"2026-09-15T18:41:59.169Z","slug":"CVE-2026-55366","body":"## Overview\n\nIn IP Multimedia Subsystem, there is a possible authentication bypass due to a logic error in the code. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.\n\n## Affected\n\n- `android`\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":[{"seq":205356,"id":"CVE-2026-55366","ts":1789574378872,"field":"cvss","old":null,"new":"9.8"},{"seq":205355,"id":"CVE-2026-55366","ts":1789574378872,"field":"severity","old":"none","new":"critical"}]}