Auth bypass in Sipeed Picoclaw
CVE-2026-16198
A vulnerability was detected in Sipeed PicoClaw up to 0.2.9. The impacted element is an unknown function of the file web/backend/middleware/access_control.go of the component First Run Setup. Performing a manipulation of the argument allowed_cidrs results in authentication bypass using alternate channel. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is regarded as difficult. The exploit is now public and may be used. The patch is named 017601354be38cb027ff3ffb01aed79bd5d12610. Applying a patch is the recommended action to fix this issue.
Vulnerability class: Broken Authentication
EPSS: 0.006 (48.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Sipeed Picoclaw — versions 0.2.0, 0.2.1, 0.2.2
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (issue-tracking, exploit)
- cna@vuldb.com (issue-tracking, patch)
- cna@vuldb.com (patch)
- cna@vuldb.com (product)
Frequently asked questions
- What is CVE-2026-16198?
- CVE-2026-16198 is a medium-severity vulnerability in Sipeed Picoclaw, classified under Improper Authentication. CVSS score: 5.6/10. Published 2026-07-19.
- How severe is CVE-2026-16198?
- Medium severity. CVSS v3 base score is 5.6 out of 10.