Vulnerability · Published Jun 25, 2026 · Assigned by Silabs
CVE-2026-4526Global ZCL command parser missing minimum-length validation in EmberZNet v9.0.2
High 7.1
In plain English
A high-severity out-of-bounds read in EmberZNet from Silicon Labs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
Severity (CVSS 4.0)7.1High
Exploit odds (30 days)0.4%top 62.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Silicon Labs | EmberZNet | 0 – through 9.0.2 |
Weakness: CWE-125 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References
- https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000pEGPQIA4?operationContext=S1 vendor-advisory, permissions-required
- https://github.com/SiliconLabsSoftware/sisdk-release/ patch