{"id":"CVE-2025-56361","title":"A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) 1.3 thru 1.4, specifically within the Level Control cluster's server tick logic (`emberAfLevelControlClusterServerTickCallback`)","summary":"A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) 1.3 thru 1.4, specifically within the Level Control cluster's server tick logic (`emberAfLevelControlClusterServerTickCallback`). When a MoveToLevel command i…","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":"2026-10-05T19:39:07.467","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-56361","references":[{"url":"https://github.com/project-chip/connectedhomeip/","label":"cve@mitre.org"},{"url":"https://github.com/project-chip/connectedhomeip/issues/38619","label":"cve@mitre.org"},{"url":"https://github.com/project-chip/connectedhomeip/issues/38619","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00581,"epssPercentile":0.45863,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-05T17:45:46.047307Z"},"ingestedAt":"2026-10-05T18:29:11.170Z","slug":"CVE-2025-56361","body":"## Overview\n\nA reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) 1.3 thru 1.4, specifically within the Level Control cluster's server tick logic (`emberAfLevelControlClusterServerTickCallback`). When a MoveToLevel command is executed and followed by a conflicting write to the OperationMode attribute (in the Pump Configuration and Control cluster), an invariant check (`minLevel < currentLevel`) fails and causes the device to abort. This leads to a denial of service condition. The issue is confirmed in SDK versions 1.3 and 1.4 (commit ab3d5ae), and is triggered remotely without authentication.\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":[{"seq":215982,"id":"CVE-2025-56361","ts":1791228716757,"field":"cvss","old":"6.5","new":"5.7"}]}