CVE-2025-56363

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).

• CWE-476

• https://github.com/project-chip/connectedhomeip/Product
• https://github.com/project-chip/connectedhomeip/issues/39173Exploit, Issue Tracking
• https://github.com/project-chip/connectedhomeip/issues/39173Exploit, Issue Tracking

Published

Jul 14, 2026

Last Modified

Jul 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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