NULL pointer dereference in Csa-Iot Matter
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).
EPSS: 0.006 (45.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Csa-iot Matter
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Issue Tracking)
- cve@mitre.org (Product)
Frequently asked questions
- What is CVE-2025-56363?
- CVE-2025-56363 is a high-severity vulnerability in Csa-Iot Matter, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-07-14.
- How severe is CVE-2025-56363?
- High severity. CVSS v3 base score is 7.5 out of 10.