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 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).
CVE-2025-56362
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 0.0(none)
- EPSS
- 11.8%
- KEV
- Not listed
Published
July 14, 2026
Last Modified
July 15, 2026
Advisory Details (2)
Auto-updated Jul 15, 2026[BUG] Assertion Failure in Level Control Cluster · Issue #38618 · project-chip/connectedhomeip · GitHub
https://github.com/project-chip/connectedhomeip/issues/38618GitHub - project-chip/connectedhomeip: Matter (formerly Project CHIP) creates more connections between more objects, simplifying development for manufacturers and increasing compatibility for consumers, guided by the Connectivity Standards Alliance. · GitHub
https://github.com/project-chip/connectedhomeip/Vendor Advisories for CVE-2025-56362(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 6× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 14:49 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
- 2026-07-14 23:23 UTCNVD update
- 2026-07-14 22:25 UTCEG score recompute
- 2026-07-14 22:25 UTCMITRE cvelistV5first tracked
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Dependency Blast Radius
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