{"id":"CVE-2026-2191","aliases":["EUVD-2026-6446","GHSA-j5pp-jx5r-4q45"],"status":"published","title":"Tenda AC9 formGetDdosDefenceList stack-based overflow","description":"A weakness has been identified in Tenda AC9 15.03.06.42_multi. Affected is the function formGetDdosDefenceList. This manipulation of the argument security.ddos.map causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.","severity":{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00786,"percentile":0.56403,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-121"],"published":"2026-02-08T22:32:10Z","modified":"2026-06-17T10:30:30Z","products":[{"vendor":"tenda","product":"ac9"},{"vendor":"tenda","product":"ac9_firmware"}],"references":[{"url":"https://vuldb.com/?id.344894","tags":["vdb-entry","technical-description","Third Party Advisory","VDB Entry"]},{"url":"https://vuldb.com/?ctiid.344894","tags":["signature","permissions-required","Permissions Required","VDB Entry"]},{"url":"https://vuldb.com/?submit.749800","tags":["third-party-advisory","Third Party Advisory","VDB Entry"]},{"url":"https://github.com/glkfc/IoT-Vulnerability/blob/main/Tenda/tenda3.md","tags":["exploit","Exploit","Third Party Advisory"]},{"url":"https://www.tenda.com.cn/","tags":["product","Product"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2191"},{"url":"https://www.tenda.com.cn"},{"url":"https://github.com/advisories/GHSA-j5pp-jx5r-4q45"}],"sources":{"cve":[{"id":"CVE-2026-2191","title":"Tenda AC9 formGetDdosDefenceList stack-based overflow","description":"A weakness has been identified in Tenda AC9 15.03.06.42_multi. Affected is the function formGetDdosDefenceList. This manipulation of the argument security.ddos.map causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.","status":"published","published":"2026-02-08T22:32:10.488Z","modified":"2026-02-23T09:50:50.691Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","level":"high","assessor":"cna"},{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R","level":"high","assessor":"cna"},{"version":"3.0","score":7.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R","level":"high","assessor":"cna"},{"version":"2.0","score":8.3,"vector":"AV:N/AC:L/Au:M/C:C/I:C/A:C/E:POC/RL:ND/RC:UR","assessor":"cna"}],"cwes":["CWE-121","CWE-119"],"updated_at":"2026-11-02T13:48:35.749498Z"}],"euvd":[{"id":"EUVD-2026-6446","description":"A weakness has been identified in Tenda AC9 15.03.06.42_multi. Affected is the function formGetDdosDefenceList. This manipulation of the argument security.ddos.map causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.","status":"published","published":"2026-02-08T22:32:10Z","modified":"2026-02-23T09:50:50Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","level":"high"}],"updated_at":"2026-11-02T19:48:33.144691Z"}],"ghsa":[{"id":"GHSA-j5pp-jx5r-4q45","title":"A weakness has been identified in Tenda AC9 15.03.06.42_multi. Affected is the function...","description":"A weakness has been identified in Tenda AC9 15.03.06.42_multi. Affected is the function formGetDdosDefenceList. This manipulation of the argument security.ddos.map causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.","status":"published","published":"2026-02-09T00:30:28Z","modified":"2026-02-09T00:30:29Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":7.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T15:06:05.991559Z"}],"nvd":[{"id":"CVE-2026-2191","description":"A weakness has been identified in Tenda AC9 15.03.06.42_multi. Affected is the function formGetDdosDefenceList. This manipulation of the argument security.ddos.map causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.","status":"published","published":"2026-02-08T23:15:49.483Z","modified":"2026-06-17T10:30:30.6Z","cvss":[{"version":"4.0","score":7.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":8.3,"vector":"AV:N/AC:L/Au:M/C:C/I:C/A:C","level":"high","assessor":"secondary"}],"cwes":["CWE-119","CWE-121"],"updated_at":"2026-11-02T14:12:05.52517Z"}]}}