Skip to content
EXYS
Back to the CVEs

CVE-2026-66281

7.5, high

In EmberZNet 9.1.1 and earlier, a malformed Discover Attributes command can result in a loop with unreachable exit condition (infinite loop)

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.5, high high CVSS v3.1
EPSS, next 30 days
0.3% higher than 21% of scored CVEs
Exploitation
No public evidence
Published
22 Oct 20268 days ago

Description

In EmberZNet 9.1.1 and earlier, a malformed Discover Attributes command can result in a loop with unreachable exit condition (infinite loop). These messages must come from a device that has already joined the network. Only devices supporting manufacturer-specific clusters are impacted.

Details

Vendor
Silicon Labs
Product
EmberZNet
Weakness
CWE-835 (opens in a new tab)
Status
Analyzed
Updated
29 Oct 2026
Assigner
product-security@silabs.com

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References 1

Patches and fixes 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Silicon Labs CVEs

Every Silicon Labs CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-85079 Silicon Labs EmberZNet Stack-based Buffer Overflow Vulnerability EPSS 0.3% 9.8, critical
  • CVE-2026-85080 Silicon Labs EmberZNet Stack-based Buffer Overflow Vulnerability EPSS 0.5% 9.1, critical
  • CVE-2026-94502 Silicon Labs EmberZNet Stack-based Buffer Overflow Vulnerability EPSS 0.3% 9.8, critical
  • CVE-2026-66282 In EmberZNet 9.1.1 and earlier, a malformed Publish Billing Period command can result in a recursive function call that will never reach… EPSS 0.3% 7.5, high

Beyond this page

Is CVE-2026-66281 in your network?

This page tells you how dangerous CVE-2026-66281 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-66281 comes with the devices to patch.

    Learn more about EXYS7600 OCELOT

  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

    Learn more about EXYS7950 KONDRA
Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 30 Oct 2026, not the live upstream state.