CVE-2026-85080

Authenticated Denial-of-Service in Zigbee GetGroupMembership Handling

CRITICAL
9.1
CVSS Score
Published: October 22, 2026 at 01:42 PM UTC
Updated: October 29, 2026 at 01:02 PM UTC
2 products affected across 2 vendorsEmberznetEmberZNet

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Severity
CRITICAL9.1
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 9.1.1
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-121

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