CVE-2025-56363
Medium
Description
A null pointer dereference vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.0, affecting the ReadRevisionAttribute function used in multiple clusters (Channel, Account Login, TargetNavigator, etc.). The function lacks proper validation of the delegate pointer before dereferencing. A remote unauthenticated attacker can exploit this issue by sending a crafted read request, causing the device to crash (denial of service). This issue has been confirmed in SDK version v1.4 (commit ab3d5ae).
SeverityMedium
CVSS5.7
Exploit probability—
ProductCsa-iot Matter
PublishedJul 14, 2026
First seenJul 14, 2026
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- csa-iot matter1.4.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| csa-iot matter | v < 1.4.0.0 | 1.4.0.0 |
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