How severe is CVE-2025-56363?

CVE-2025-56363 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-56363 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-56363?

CVE-2025-56363 affects Csa-iot Matter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-56363?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2025-56363 published?

CVE-2025-56363 was published on 2026-07-14 and last updated on 2026-07-17.

CVE-2025-56363

CVE-2025-56363 is a high-severity vulnerability in Csa-iot Matter with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Csa-iot Matter
Published: 2026-07-14
Last modified: 2026-07-17

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).

Frequently asked questions

What is 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).
How severe is CVE-2025-56363?: CVE-2025-56363 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-56363 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-56363?: CVE-2025-56363 affects Csa-iot Matter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-56363?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2025-56363 published?: CVE-2025-56363 was published on 2026-07-14 and last updated on 2026-07-17.

References

Affected products (1)

cpe:2.3:a:csa-iot:matter:*:*:*:*:*:*:*:*

More vulnerabilities in Csa-iot Matter

CVE-2025-56365 — High (CVSS 7.5): A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.0, in the interaction model…
CVE-2025-56364 — High (CVSS 7.5): A use of uninitialized value vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.0, where the…
CVE-2025-56362 — High (CVSS 7.5): A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.2, specifically within the…
CVE-2025-56361 — High (CVSS 7.5): A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) 1.3 thru 1.4, specifically within the…
CVE-2024-3297 — Medium (CVSS 6.5): An issue in the Certificate Authenticated Session Establishment (CASE) protocol for establishing secure sessions…
CVE-2024-3454 — Low (CVSS 3.5): An implementation issue in the Connectivity Standards Alliance Matter 1.2 protocol as used in the connectedhomeip SDK…

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CVE-2026-53399 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: nfsd: release layout stid on setlease…
CVE-2026-53355 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: net: rds: clear i_sends on setup unwind The RDS…

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