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

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.

6.0 MEDIUMEPSS 0.49%Not in KEVNVD: Analyzed

Last updated: 2026-10-29 13:02 UTC

OverviewCVSS details

6.0MEDIUMCVSS 4.0

Score source: Silabs (CNA)
NVD status: Analyzed
Published: Oct 22, 2026
Assigner: Silabs

Affected

EmberZNet (Silicon Labs)

Versions: through 9.1.1

Exploitation

Public exploit: None listed
CISA KEV: Not listed
KEV due date: —
SSVC: Exploitation none · Automatable no · Impact partial

EPSS · FIRST, scored Nov 9

0.49%chance of exploitation in 30 days

Higher than 42.95% of CVEs

CVSS 4.0 · Silabs (CNA)

6.0Medium

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

Attack vector: Network
Attack complexity: Low
Attack requirements: Present
Privileges required: Low
User interaction: None
Confidentiality impact: None
Integrity impact: None
Availability impact: High
Confidentiality (other systems): None
Integrity (other systems): None
Availability (other systems): None

CVSS 3.1 · NVD

9.1Critical

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

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: High
Availability impact: High

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
6.0	MEDIUM	4.0Silabs (CNA)	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
9.1	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Details

CVE ID: CVE-2026-85080
Status: Analyzed
Assigner (CNA): Silabs
Published: Oct 22, 2026
Last modified: 2026-10-29 13:02 UTC
Weaknesses: CWE-121 · Stack-based Buffer Overflow

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-10 09:12 UTC.