{"id":"CVE-2026-105664","title":"Guangzhou Juan IoT Technology EseeCloud Observable Response Discrepancy","summary":"The endpoint exposes an observable response discrepancy when processing ID values. A request submitted with a nonexistent ID returns a distinct error response code from one submitted with a valid, registered ID, allowing an attacker hold…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-204"],"vendor":"Guangzhou Juan IoT Technology Co., Ltd.","product":"EseeCloud App","affected":["eseecloud_app <= 4.9.6","eseecloud_firmware <= 4.9.86.0"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-16T15:06:34.434306Z"},"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:20:19.651Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-105664","references":[{"url":"https://eseecloud.app/"},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-288-02"},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-288-02.json"}],"tags":["cve.org"],"ingestedAt":"2026-10-16T15:11:47.135Z","slug":"CVE-2026-105664","body":"## Overview\n\nThe endpoint exposes an observable response discrepancy when processing ID values. A request submitted with a nonexistent ID returns a distinct error response code from one submitted with a valid, registered ID, allowing an attacker holding a valid access token - but without further authentication or authorization - to distinguish valid ID values from the full 10-digit numeric search space. Combined with the absence of meaningful rate limiting on this endpoint, this discrepancy constitutes an enumeration oracle, enabling an attacker to discover registered devices at scale.\n\n## Affected\n\n- `eseecloud_app <= 4.9.6`\n- `eseecloud_firmware <= 4.9.86.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nGuangzhou Juan IoT Technology Co., Ltd. did not respond to CISA's coordination attempts. EseeCloud users are advised to contact Guangzhou Juan IoT Technology Co., Ltd. for support  https://eseecloud.app/  .","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}