CVE-2026-47147 OTA server raw parser missing per-field bounds validation in EmberZNet v9.0.2
A network-joined device can trigger out-of-bounds reads in the OTA server parser to leak limited RAM data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-47147?
CVE-2026-47147 is a high-severity vulnerability in Silicon Labs EmberZNet, published on 25 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-125
Which versions are affected by CVE-2026-47147?
It affects 1 product.
Products include Silabs Emberznet.
How do I fix CVE-2026-47147?
No fix has been published for CVE-2026-47147 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-47147 being exploited?
There is no known exploitation of CVE-2026-47147 in the wild and no public exploit code.
Other vulnerabilities in Silicon Labs EmberZNet
- CVE-2023-41094 Touchlink authentication bypass due to packets processed after timeout or out of range in Ember ZNet
- CVE-2026-85079 Out-of-bounds write in Zigbee Simple_Desc_req handling
- CVE-2026-94502 Out-of-bounds write in Zigbee Publish Price Matrix handling
- CVE-2026-4526 Global ZCL command parser missing minimum-length validation in EmberZNet v9.0.2
- CVE-2026-47145 Color Control hue/saturation assertion abort in EmberZNet v9.0.2
Sources
Also known as GHSA-522j-298p-h26w.