Medium severity · published Jun 25, 2026
CVE-2026-4526
Global ZCL command parser missing minimum-length validation in EmberZNet v9.0.2
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
In EmberZNet v9.0.2 and earlier, malformed global ZCL messages can trigger out-of-bounds reads in framework parsing logic and terminate the process. These messages must come from a device that has already joined the network, and no information leakage back to the sender was observed.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EM
EmberZNet · Silicon Labs
through 9.0.2 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-4526
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-4526
Not Applicable
https://github.com/SiliconLabsSoftware/sisdk-release/
Permissions Required
https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000pEGPQIA4?operationContext=S1
More from EmberZNet
9.8
CVE-2026-85079
Out-of-bounds write in Zigbee Simple_Desc_req handling
9.8
CVE-2026-94502
Out-of-bounds write in Zigbee Publish Price Matrix handling
9.1
CVE-2026-85080
Authenticated Denial-of-Service in Zigbee GetGroupMembership Handling
7.5
CVE-2026-66282
Authenticated Denial-of-Service in Zigbee Publish Billing Period
7.5
CVE-2026-66281
Authenticated Denial-of-Service in Zigbee Discover Attributes Handling