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Critical severity · published Jan 30, 2026
CVE-2025-7964
Zigbee Router Denial of Service
9.2
CVSS
0.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SL
Silicon Labs Zigbee Stack · silabs.com
through 4.4.6; through 2025.6.1 · source: vendor
Affected product
SL
Silicon Labs Zigbee Stack
silabs.com
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-7964
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-7964
community.silabs.com
https://community.silabs.com/068Vm00000dspiL