CVE-2026-6432 Improper bounds validation in EmberZNet SDK
An attacker with network access can leak limited stack bytes via improper bounds validation in the ZAP command parser of the EmberZNet SDK.
- 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-2026-6432?
CVE-2026-6432 is a medium-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
Improper bounds validation in the ZAP command parser of EmberZNet SDK versions 8.0.0 through 9.1.1 (inclusive) and before 7.5.2 (exclusive) may result in crashes or dynamic memory leakage. In order to exploit this vulnerability, an attacker would have to have the ability to send arbitrary messages on the network. The only known exploit of this vulnerability leaks a limited number of bytes from the stack. No denial-of-service, memory corruption, or remote code execution has been shown.
Weakness: CWE-130
Which versions are affected by CVE-2026-6432?
How do I fix CVE-2026-6432?
No fix has been published for CVE-2026-6432 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-6432 being exploited?
There is no known exploitation of CVE-2026-6432 in the wild and no public exploit code.
Sources
Also known as GHSA-2mwj-cc94-39wv.