How severe is CVE-2024-56317?

CVE-2024-56317 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-2024-56317 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-56317?

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.

Does CVE-2024-56317 have an EU (EUVD) identifier?

Yes. CVE-2024-56317 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-53106.

When was CVE-2024-56317 published?

CVE-2024-56317 was published on 2024-12-18 and last updated on 2026-06-17.

CVE-2024-56317

CVE-2024-56317 is a high-severity vulnerability 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-281.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-53106
Weakness: CWE-281
Published: 2024-12-18
Last modified: 2026-06-17

Description

In Matter (aka connectedhomeip or Project CHIP) through 1.4.0.0, the WriteAcl function deletes all existing ACL entries first, and then attempts to recreate them based on user input. If input validation fails during decoding, the process stops, and no entries are restored by access-control-server.cpp, i.e., a denial of service.

Frequently asked questions

What is CVE-2024-56317?: In Matter (aka connectedhomeip or Project CHIP) through 1.4.0.0, the WriteAcl function deletes all existing ACL entries first, and then attempts to recreate them based on user input. If input validation fails during decoding, the process stops, and no entries are restored by access-control-server.cpp, i.e., a denial of service.
How severe is CVE-2024-56317?: CVE-2024-56317 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-2024-56317 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-56317?: 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.
Does CVE-2024-56317 have an EU (EUVD) identifier?: Yes. CVE-2024-56317 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-53106.
When was CVE-2024-56317 published?: CVE-2024-56317 was published on 2024-12-18 and last updated on 2026-06-17.

References

https://github.com/project-chip/connectedhomeip/issues/36535

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