Vulnerability · Published Oct 22, 2026 · Assigned by Silabs

CVE-2026-85080Authenticated Denial-of-Service in Zigbee GetGroupMembership Handling

Medium 6.0

In plain English

A medium-severity stack buffer overflow 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 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 4.0)6.0Medium

Exploit odds (30 days)0.5%top 57.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

In EmberZNet 9.1.1 and earlier, a malformed GetGroupMembership message can result in an out-of-bounds write leading to a crash. A limited number of values can be written using this vulnerability, so no route to remote code execution was observed. These messages must come from a device that has already joined the network. Only devices supporting the Group Cluster are impacted.

Affected products (as reported)

Vendor	Product	Versions
Silicon Labs	EmberZNet	0 – through 9.1.1

Weakness: CWE-121 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References

https://github.com/SiliconLabsSoftware/docs-security-advisories/blob/main/Advisories/500-599/A-00000590.md vendor-advisory