How severe is CVE-2025-7964?

CVE-2025-7964 has a CVSS 4.0 base score of 9.2, rated critical severity.

Is CVE-2025-7964 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-7964?

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

Does CVE-2025-7964 have an EU (EUVD) identifier?

Yes. CVE-2025-7964 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206576.

When was CVE-2025-7964 published?

CVE-2025-7964 was published on 2026-01-30 and last updated on 2026-06-17.

CVE-2025-7964

CVE-2025-7964 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.2. 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-229.

Key facts

Severity: Critical (CVSS 4.0 base score 9.2)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-206576
Weakness: CWE-229
Published: 2026-01-30
Last modified: 2026-06-17

Description

After receiving a malformed 802.15.4 MAC Data Request the Zigbee Coordinator sends a ‘network leave’ request to Zigbee router resulting in the Zigbee Router getting stuck in a non-rejoinable state. If a suitable parent is not available, the end devices will be unable to rejoin. A manual recommissioning is required to recover the Zigbee Router.

Frequently asked questions

What is CVE-2025-7964?: After receiving a malformed 802.15.4 MAC Data Request the Zigbee Coordinator sends a ‘network leave’ request to Zigbee router resulting in the Zigbee Router getting stuck in a non-rejoinable state. If a suitable parent is not available, the end devices will be unable to rejoin. A manual recommissioning is required to recover the Zigbee Router.
How severe is CVE-2025-7964?: CVE-2025-7964 has a CVSS 4.0 base score of 9.2, rated critical severity.
Is CVE-2025-7964 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-7964?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-7964 have an EU (EUVD) identifier?: Yes. CVE-2025-7964 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206576.
When was CVE-2025-7964 published?: CVE-2025-7964 was published on 2026-01-30 and last updated on 2026-06-17.

References

https://community.silabs.com/068Vm00000dspiL

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