{"id":"CVE-2021-43164","title":"A Remote Code Execution (RCE) vulnerability exists in Ruijie Networks Ruijie RG-EW Series Routers up to ReyeeOS 1.55.1915 / EW_3.0(1)B11P55 via the updateVersion function in /cgi-bin/luci/api/wireless.","summary":"A Remote Code Execution (RCE) vulnerability exists in Ruijie Networks Ruijie RG-EW Series Routers up to ReyeeOS 1.55.1915 / EW_3.0(1)B11P55 via the updateVersion function in /cgi-bin/luci/api/wireless.","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-78"],"vendor":"ruijienetworks","product":"reyeeos","affected":["reyeeos <= 1.55.1915_ew_3.0\\(1\\)b11p55"],"published":"2022-05-04","updated":"2026-07-05","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-43164","references":[{"url":"http://packetstormsecurity.com/files/167099/Ruijie-Reyee-Mesh-Router-Remote-Code-Execution.html","label":"cve@mitre.org"},{"url":"https://seclists.org/fulldisclosure/2022/May/0","label":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/167099/Ruijie-Reyee-Mesh-Router-Remote-Code-Execution.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://ruijie.com","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/fulldisclosure/2022/May/0","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","exploit-available"],"epss":0.35028,"epssPercentile":0.98384,"exploitAvailable":true,"ingestedAt":"2026-07-06T17:03:24.362Z","exploits":{"exploitdb":true,"checkedAt":"2026-09-25T08:20:40.187Z"},"slug":"CVE-2021-43164","body":"## Overview\n\nA Remote Code Execution (RCE) vulnerability exists in Ruijie Networks Ruijie RG-EW Series Routers up to ReyeeOS 1.55.1915 / EW_3.0(1)B11P55 via the updateVersion function in /cgi-bin/luci/api/wireless.\n\n## Affected\n\n- `reyeeos <= 1.55.1915_ew_3.0\\(1\\)b11p55`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":67,"depthScoreParts":{"impact":48.4,"likelihood":7,"exploitation":12,"ransomware":0},"changes":[]}