CVE-2026-66281EUVD-2026-108181GHSA-66PG-69WM-9QQF
Authenticated Denial-of-Service in Zigbee Discover Attributes Handling
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
The Zigbee stack EmberZNet, used in certain wireless smart-home and IoT devices, can be made to hang by a malformed Discover Attributes command. An attacker must already be a joined device on the network, and only devices that support manufacturer-specific clusters are affected.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original 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.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Silicon Labs EmberZNet
through 9.1.1