Description
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).
Affected products
csa-iot: matter
References3
- github.com/project-chip/connectedhomeip/issues/38618 ExploitIssue Tracking
- github.com/project-chip/connectedhomeip/issues/38618 ExploitIssue Tracking
- github.com/project-chip/connectedhomeip/ Product
Metrics
- CVSS 3.1
-
5.7
MEDIUM
Score source: NVD
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 20 · as of 15 November 2026
- CWE
- CWE-617
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