{"id":"CVE-2025-56365","title":"A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.0, in the interaction model command processing logic","summary":"A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.0, in the interaction model command processing logic. When an InvokeCommandRequest is sent to a nonexistent endpoint and cluster (e.g., 0x34), the …","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 < 1.4.0.0"],"patched":["matter 1.4.0.0"],"published":"2026-07-14","updated":"2026-10-05","sourceUpdated":"2026-10-05T19:36:22.723","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-56365","references":[{"url":"https://github.com/project-chip/connectedhomeip/","label":"cve@mitre.org"},{"url":"https://github.com/project-chip/connectedhomeip/issues/37184","label":"cve@mitre.org"},{"url":"https://github.com/project-chip/connectedhomeip/pull/37207","label":"cve@mitre.org"},{"url":"https://github.com/project-chip/connectedhomeip/issues/37184","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00616,"epssPercentile":0.47722,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-05T17:46:46.676580Z"},"ingestedAt":"2026-10-05T18:29:11.171Z","slug":"CVE-2025-56365","body":"## Overview\n\nA reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.0, in the interaction model command processing logic. When an InvokeCommandRequest is sent to a nonexistent endpoint and cluster (e.g., 0x34), the code incorrectly treats the endpoint as valid due to missing checks in CodegenDataModelProvider::Invoke. This causes a VerifyOrDie failure in ProcessCommandDataIB and results in a crash (SIGABRT). The issue has been acknowledged and fixed in a later revision (PR #37207).\n\n## Affected\n\n- `matter < 1.4.0.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `matter 1.4.0.0`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":31.4,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}