CVE-2026-120345
CVE-2026-120345
A vulnerability was found in WAVLINK WN551X3-A M51X3_V251020-WO-182e965. This impacts the function sub_41a430 of the file /bin/ioos of the component DNS Resolution Handler. Performing a manipulation of the argument data results in os command injection. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure.
Vulnerability class: Command Injection (OS Command Injection)
Published .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- vuldb.com/vuln/429670 (technical-description, vdb-entry)
- vuldb.com/vuln/429670/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-120345 (third-party-advisory)
- vuldb.com/submit/919579 (third-party-advisory)
- github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK_WN551X3-A Router/WAVLINK_… (exploit)
Frequently asked questions
- What is CVE-2026-120345?
- CVE-2026-120345 is a critical-severity vulnerability, classified under Command Injection. CVSS score: 10.0/10. Published 2026-11-02.
- How severe is CVE-2026-120345?
- Critical severity. CVSS v3 base score is 10.0 out of 10.