{"id":"CVE-2025-9791","title":"A weakness has been identified in Tenda AC20 16.03.08.05","summary":"A weakness has been identified in Tenda AC20 16.03.08.05. This vulnerability affects unknown code of the file /goform/fromAdvSetMacMtuWan. This manipulation of the argument wanMTU causes stack-based buffer overflow. Remote exploitation o…","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-119","CWE-121","CWE-787"],"vendor":"tenda","product":"ac20_firmware","affected":["ac20_firmware = 16.03.08.5"],"published":"2025-09-01","updated":"2026-09-26","sourceUpdated":"2026-09-26T00:10:00.127","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-9791","references":[{"url":"https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md","label":"cna@vuldb.com"},{"url":"https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md#poc","label":"cna@vuldb.com"},{"url":"https://vuldb.com/?ctiid.322106","label":"cna@vuldb.com"},{"url":"https://vuldb.com/?id.322106","label":"cna@vuldb.com"},{"url":"https://vuldb.com/?submit.641088","label":"cna@vuldb.com"},{"url":"https://www.tenda.com.cn/","label":"cna@vuldb.com"},{"url":"https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md#poc","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00855,"epssPercentile":0.56614,"ingestedAt":"2026-09-26T00:22:39.906Z","slug":"CVE-2025-9791","body":"## Overview\n\nA weakness has been identified in Tenda AC20 16.03.08.05. This vulnerability affects unknown code of the file /goform/fromAdvSetMacMtuWan. This manipulation of the argument wanMTU causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be exploited.\n\n## Affected\n\n- `ac20_firmware = 16.03.08.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}