What is CVE-2025-56363?

CVE-2025-56363 is a medium-severity vulnerability in Csa-Iot Matter, classified under NULL Pointer Dereference. CVSS score: 5.7/10. Published 2026-07-14.

How severe is CVE-2025-56363?

Medium severity. CVSS v3 base score is 5.7 out of 10.

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).

Published 2026-07-14 · last modified 2026-10-13.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.6th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.004 · change: -0.002

Affected products

Csa-Iot Matter

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

github.com/project-chip/connectedhomeip/issues/39173 (Exploit, Issue Tracking)
github.com/project-chip/connectedhomeip/ (Product)

Frequently asked questions

What is CVE-2025-56363?: CVE-2025-56363 is a medium-severity vulnerability in Csa-Iot Matter, classified under NULL Pointer Dereference. CVSS score: 5.7/10. Published 2026-07-14.
How severe is CVE-2025-56363?: Medium severity. CVSS v3 base score is 5.7 out of 10.