Quick answers
- Is CVE-2026-66282 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-66282 being exploited in the wild.
- How severe is CVE-2026-66282?
- Informational severity, published 22 October 2026.
- Which products and versions are affected?
- Silicon Labs EmberZNet 9.1.1 and earlier; Silicon Labs SiSDK 2026.6.1 and earlier.
- Is there a fix for CVE-2026-66282?
- Yes: fixed in SiSDK 2026.6.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-66282 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-66282?
- Check whether you run Silicon Labs EmberZNet or Silicon Labs SiSDK at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: SiSDK 2026.6.2 or later
Technical details
A recursive function call triggered by a malformed Publish Billing Period command in the Price Cluster never reaches its end condition, causing unbounded recursion. The attacker must be authenticated and already joined to the target Zigbee network. This results in denial of service via device hang or memory exhaustion; watchdog timers may allow recovery.
Affected products
- Silicon Labs EmberZNet 9.1.1 and earlier
- Silicon Labs SiSDK 2026.6.1 and earlier
Timeline
- 2026-10-22: disclosed