{"id":"CVE-2026-120241","title":"Ruijie RG-ES205GC Local Firmware Upgrade httpupg.cgi buffer overflow","summary":"A vulnerability was identified in Ruijie RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP and RG-ES210GS-P ESW_1.0(1)B1P48. Impacted is an unknown function of the file httpupg.cgi of the component Local Firmware Upgrade Interface. The…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:X/RC:R","cvssSource":"cna","cwe":["CWE-120","CWE-119"],"vendor":"Ruijie","product":"RG-ES205GC","affected":["RG-ES205GC ESW_1.0(1)B1P48","RG-ES206GC-P ESW_1.0(1)B1P48","RG-ES208GC ESW_1.0(1)B1P48","RG-ES210GC-LP ESW_1.0(1)B1P48","RG-ES210GS-P ESW_1.0(1)B1P48"],"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-11-05T15:48:56.370678Z"},"exploitAvailable":true,"published":"2026-11-01","updated":"2026-11-05","sourceUpdated":"2026-11-05T15:49:16.545Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-120241","references":[{"url":"https://vuldb.com/vuln/429600","label":"VDB-429600 | Ruijie RG-ES205GC Local Firmware Upgrade httpupg.cgi buffer overflow"},{"url":"https://vuldb.com/vuln/429600/cti","label":"VDB-429600 | CTI Indicators (IOB, IOC, IOA)"},{"url":"https://vuldb.com/cve/CVE-2026-120241","label":"CVE-2026-120241 | CVE Analysis and Report"},{"url":"https://vuldb.com/submit/1016041","label":"Submit #1016041 | Ruijie Networks Co., Ltd. RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP, RG-ES210GS-P (sharing the same ESW firmware; NIS2100 series may also be aff ESW_1.0(1)B1P48, Release(12211919) Buffer Overflow"},{"url":"https://github.com/byseeker/Ruijie-RG-ES-Series-Switches_PreAuth_Boundary_Overflow_DoS"}],"tags":["cve.org","exploit-available"],"epss":0.00619,"epssPercentile":0.49778,"ingestedAt":"2026-11-05T21:36:00.923Z","slug":"CVE-2026-120241","body":"## Overview\n\nA vulnerability was identified in Ruijie RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP and RG-ES210GS-P ESW_1.0(1)B1P48. Impacted is an unknown function of the file httpupg.cgi of the component Local Firmware Upgrade Interface. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.\n\n## Affected\n\n- `RG-ES205GC ESW_1.0(1)B1P48`\n- `RG-ES206GC-P ESW_1.0(1)B1P48`\n- `RG-ES208GC ESW_1.0(1)B1P48`\n- `RG-ES210GC-LP ESW_1.0(1)B1P48`\n- `RG-ES210GS-P ESW_1.0(1)B1P48`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}