{"id":"CVE-2021-31624","aliases":["EUVD-2021-18513","GHSA-qvhc-5474-w39h"],"status":"published","title":"Buffer Overflow vulnerability in Tenda AC9 V1.0 through V15.03.05.19(6318), and AC9 V3.0 V15.03...","description":"Buffer Overflow vulnerability in Tenda AC9 V1.0 through V15.03.05.19(6318), and AC9 V3.0 V15.03.06.42_multi, allows attackers to execute arbitrary code via the urls parameter.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01148,"percentile":0.67252,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-120"],"published":"2021-10-29T10:25:47Z","modified":"2026-07-09T01:16:52Z","exploits":[{"source":"pocgithub","id":"sifatnotes/Learn-SecByte-CTF-Labs-Tabnabbing-Web-Recon-Nmap-Netdiscover-CVE-Labs","title":"sifatnotes/Learn-SecByte-CTF-Labs-Tabnabbing-Web-Recon-Nmap-Netdiscover-CVE-Labs","date":"2026-10-05","url":"https://github.com/sifatnotes/Learn-SecByte-CTF-Labs-Tabnabbing-Web-Recon-Nmap-Netdiscover-CVE-Labs"}],"products":[{"vendor":"tendacn","product":"ac9_firmware"}],"references":[{"url":"https://github.com/Lyc-heng/routers/blob/main/routers/stack2.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31624"},{"url":"http://tenda.com"},{"url":"https://github.com/advisories/GHSA-qvhc-5474-w39h"}],"sources":{"cve":[{"id":"CVE-2021-31624","description":"Buffer Overflow vulnerability in Tenda AC9 V1.0 through V15.03.05.19(6318), and AC9 V3.0 V15.03.06.42_multi, allows attackers to execute arbitrary code via the urls parameter.","status":"published","published":"2021-10-29T10:25:47Z","modified":"2026-07-09T00:13:24.202Z","updated_at":"2026-11-02T14:33:05.665371Z"}],"euvd":[{"id":"EUVD-2021-18513","description":"Buffer Overflow vulnerability in Tenda AC9 V1.0 through V15.03.05.19(6318), and AC9 V3.0 V15.03.06.42_multi, allows attackers to execute arbitrary code via the urls parameter.","status":"published","published":"2021-10-29T10:25:47Z","modified":"2026-07-09T00:13:24Z","updated_at":"2026-11-02T18:20:09.112703Z"}],"ghsa":[{"id":"GHSA-qvhc-5474-w39h","title":"Buffer Overflow vulnerability in Tenda AC9 V1.0 through V15.03.05.19(6318), and AC9 V3.0 V15.03...","description":"Buffer Overflow vulnerability in Tenda AC9 V1.0 through V15.03.05.19(6318), and AC9 V3.0 V15.03.06.42_multi, allows attackers to execute arbitrary code via the urls parameter.","status":"published","published":"2022-05-24T19:19:14Z","modified":"2026-07-05T00:31:23Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T15:09:14.376377Z"}],"nvd":[{"id":"CVE-2021-31624","description":"Buffer Overflow vulnerability in Tenda AC9 V1.0 through V15.03.05.19(6318), and AC9 V3.0 V15.03.06.42_multi, allows attackers to execute arbitrary code via the urls parameter.","status":"published","published":"2021-10-29T11:15:08.383Z","modified":"2026-07-09T01:16:52.767Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5.8,"vector":"AV:A/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:07:00.549994Z"}]}}