CVE-2026-47147

OTA server raw parser missing per-field bounds validation in EmberZNet v9.0.2

HIGH
7.1
CVSS Score
Published: June 25, 2026 at 01:36 PM UTC
Updated: October 25, 2026 at 11:10 PM UTC
2 products affected across 2 vendorsEmberznetEmberZNet

Using EmberZNet by Silicon Labs?

Get instant alerts when new vulnerabilities affect EmberZNet - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

In EmberZNet v9.0.2 and earlier, malformed OTA requests can drive the OTA server parser into out-of-bounds reads. A limited amount of data from RAM is read back to the requester. The size and location of this data is limited. These requests must come from a device that has already joined the network. Only devices supporting the OTA Server cluster may be impacted.

Affected

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

v ≤ 9.0.2
v ≤ 9.0.2

Remediation

No guide yet

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

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

7.1HIGHSilabs
Vector?

Quick Info

StatusANALYZED
CWE
CWE-125

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card