What is CVE-2023-1261?

CVE-2023-1261 is a high-severity vulnerability in Silabs Wi-Sun Software Development Kit, classified under Missing Authorization. CVSS score: 8.2/10. Published 2023-03-21.

How severe is CVE-2023-1261?

High severity. CVSS v3 base score is 8.2 out of 10.

Auth bypass in Silabs Wi-Sun Software Development Kit

CVE-2023-1261

Missing MAC layer security in Silicon Labs Wi-SUN SDK v1.5.0 and earlier allows malicious node to route malicious messages through network.

Vulnerability class: Broken Access Control

Published 2023-03-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.

EPSS exploit prediction

EPSS: 0.004 (35.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.7% 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 Wi-Sun Software Development Kit
Silabs.com Wi-Sun Sdk — versions 1.0.0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

github.com/SiliconLabs/gecko_sdk (Product, patch)
community.silabs.com/sfc/servlet.shepherd/document/download/0698Y00000SMyfRQAT (Permissions Required, vendor-advisory)

Frequently asked questions

What is CVE-2023-1261?: CVE-2023-1261 is a high-severity vulnerability in Silabs Wi-Sun Software Development Kit, classified under Missing Authorization. CVSS score: 8.2/10. Published 2023-03-21.
How severe is CVE-2023-1261?: High severity. CVSS v3 base score is 8.2 out of 10.