Out-of-bounds Read in Silabs Emberznet
CVE-2026-4526
In EmberZNet v9.0.2 and earlier, malformed global ZCL messages can trigger out-of-bounds reads in framework parsing logic and terminate the process. These messages must come from a device that has already joined the network, and no information leakage back to the sender was observed.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Silabs Emberznet
- Silicon Labs Emberznet — versions 0
Weakness classification (CWE)
References
- siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm000… (Permissions Required, vendor-advisory, permissions-required)
- github.com/SiliconLabsSoftware/sisdk-release/ (patch, Not Applicable)
Frequently asked questions
- What is CVE-2026-4526?
- CVE-2026-4526 is a medium-severity vulnerability in Silabs Emberznet, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2026-06-25.
- How severe is CVE-2026-4526?
- Medium severity. CVSS v3 base score is 6.5 out of 10.