{"id":"CVE-2025-56362","title":"A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.2, specifically within the Level Control cluster's periodic server tick logic","summary":"A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.2, specifically within the Level Control cluster's periodic server tick logic. When a MoveToLevel command is sent and immediately followed by a wri…","severity":"medium","cvss":5.7,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-617"],"vendor":"csa-iot","product":"matter","affected":["matter = 1.3.0.0","matter = 1.4.0.0"],"published":"2026-07-14","updated":"2026-10-05","sourceUpdated":"2026-10-05T19:38:18.010","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-56362","references":[{"url":"https://github.com/project-chip/connectedhomeip/","label":"cve@mitre.org"},{"url":"https://github.com/project-chip/connectedhomeip/issues/38618","label":"cve@mitre.org"},{"url":"https://github.com/project-chip/connectedhomeip/issues/38618","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00581,"epssPercentile":0.45862,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-05T17:46:06.918797Z"},"ingestedAt":"2026-10-05T18:29:11.170Z","slug":"CVE-2025-56362","body":"## Overview\n\nA reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.2, specifically within the Level Control cluster's periodic server tick logic. When a MoveToLevel command is sent and immediately followed by a write of OperationMode=2 (in the Pump Configuration and Control cluster), the server tick function violates the assertion `currentLevel < maxLevel`, resulting in a crash. This can be exploited remotely without authentication to cause denial of service. Affected versions include 1.3 and 1.4 (commit ab3d5ae).\n\n## Affected\n\n- `matter = 1.3.0.0`\n- `matter = 1.4.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":31.4,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}