Vulnerability · Published Jun 25, 2026 · Assigned by Silabs
CVE-2026-47153Level Control Step With On/Off divide-by-zero in EmberZNet v9.0.2
High 7.1
In plain English
A high-severity security flaw 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, a malformed Level Control Step command can terminate the process through a divide-by-zero fault. This command must come from a device that has already joined the network. Only devices supporting the Level Control cluster may be impacted.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Silicon Labs | EmberZNet | 0 – through 9.0.2 |
Weakness: CWE-369 · 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