{"id":"CVE-2026-120345","title":"WAVLINK WN551X3-A DNS Resolution ioos sub_41a430 os command injection","summary":"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 com…","severity":"critical","cvss":10,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R","cvssSource":"cna","cwe":["CWE-78","CWE-77"],"vendor":"WAVLINK","product":"WN551X3-A","affected":["WN551X3-A M51X3_V251020-WO-182e965"],"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"total","timestamp":"2026-11-05T21:30:00.938829Z"},"exploitAvailable":true,"published":"2026-11-02","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:30:24.203Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-120345","references":[{"url":"https://vuldb.com/vuln/429670","label":"VDB-429670 | WAVLINK WN551X3-A DNS Resolution ioos sub_41a430 os command injection"},{"url":"https://vuldb.com/vuln/429670/cti","label":"VDB-429670 | CTI Indicators (IOB, IOC, TTP, IOA)"},{"url":"https://vuldb.com/cve/CVE-2026-120345","label":"CVE-2026-120345 | CVE Analysis and Report"},{"url":"https://vuldb.com/submit/919579","label":"Submit #919579 | Wavlink Router Firmware WN551X3-A-M51X3_V251020-WO Command Injection"},{"url":"https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK_WN551X3-A%20Router/WAVLINK_WN551X3-A_dns_resolution_command_injection.md"}],"tags":["cve.org","exploit-available"],"epss":0.01989,"epssPercentile":0.80709,"ingestedAt":"2026-11-05T19:30:42.623Z","slug":"CVE-2026-120345","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `WN551X3-A M51X3_V251020-WO-182e965`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":67,"depthScoreParts":{"impact":55,"likelihood":0.4,"exploitation":12,"ransomware":0},"changes":[{"seq":234876,"id":"CVE-2026-120345","ts":1793918465740,"field":"exploit_available","old":"false","new":"true"}]}