CVE-2026-85079

Out-of-bounds write in Zigbee Simple_Desc_req handling

Published Oct 22, 2026 CVSS 4.0 · 7.5 High EPSS < 1% KEV · Not listed
Description
In EmberZNet 9.1.1 and earlier, a malformed Simple_Desc_req response can result in an out-of-bounds write potentially leading to remote code execution. This response must come from a device that has already joined the network, and the attacker must wait for a Simple_Desc_req before the attack can be performed.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Silabs
Silabs emberznet
CPEs cpe:2.3:a:silabs:emberznet:*:*:*:*:*:*:*:*
Vendors & Products Silabs
Silabs emberznet
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Silicon Labs
Silicon Labs emberznet
Vendors & Products Silicon Labs
Silicon Labs emberznet
Type Values Removed Values Added
Description In EmberZNet 9.1.1 and earlier, a malformed Simple_Desc_req response can result in an out-of-bounds write potentially leading to remote code execution. This response must come from a device that has already joined the network, and the attacker must wait for a Simple_Desc_req before the attack can be performed.
Title Out-of-bounds write in Zigbee Simple_Desc_req handling
Weaknesses CWE-121
References
Metrics cvssV4_0

{'score': 7.5, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Silabs
Published
Updated
Oct 22, 2026, 7:00 PM
Reserved
Sep 2, 2026, 9:28 PM
Status
Analyzed
Published
Oct 22, 2026, 2:17 PM
Modified
Oct 29, 2026, 1:03 PM