{"id":"CVE-2025-11091","state":"PUBLISHED","title":"Tenda AC21 SetStaticRouteCfg sscanf buffer overflow","description":"A security flaw has been discovered in Tenda AC21 up to 16.03.08.16. Affected by this vulnerability is the function sscanf of the file /goform/SetStaticRouteCfg. The manipulation of the argument list results in buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be exploited.","publishedAt":"2025-09-28T01:32:10.696Z","updatedAt":"2025-09-29T14:48:57.508Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["Tenda AC21"],"affected":[{"vendor":"Tenda","product":"AC21","versions":[{"version":"16.03.08.0","status":"affected"},{"version":"16.03.08.1","status":"affected"},{"version":"16.03.08.2","status":"affected"},{"version":"16.03.08.3","status":"affected"},{"version":"16.03.08.4","status":"affected"},{"version":"16.03.08.5","status":"affected"},{"version":"16.03.08.6","status":"affected"},{"version":"16.03.08.7","status":"affected"},{"version":"16.03.08.8","status":"affected"},{"version":"16.03.08.9","status":"affected"},{"version":"16.03.08.10","status":"affected"},{"version":"16.03.08.11","status":"affected"},{"version":"16.03.08.12","status":"affected"},{"version":"16.03.08.13","status":"affected"},{"version":"16.03.08.14","status":"affected"},{"version":"16.03.08.15","status":"affected"},{"version":"16.03.08.16","status":"affected"}]}],"references":["https://vuldb.com/?id.326173","https://vuldb.com/?ctiid.326173","https://vuldb.com/?submit.661806","https://github.com/maximdevere/CVE2/issues/2","https://www.tenda.com.cn/"],"weaknesses":["CWE-120","CWE-119"],"ingestedAt":"2026-10-29T20:08:31.050Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/11xxx/CVE-2025-11091.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-11091","state":"PUBLISHED","datePublished":"2025-09-28T01:32:10.696Z","dateUpdated":"2025-09-29T14:48:57.508Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2025-09-27T05:26:44.839Z"},"containers":{"cna":{"title":"Tenda AC21 SetStaticRouteCfg sscanf buffer overflow","descriptions":[{"lang":"en","value":"A security flaw has been discovered in Tenda AC21 up to 16.03.08.16. Affected by this vulnerability is the function sscanf of the file /goform/SetStaticRouteCfg. The manipulation of the argument list results in buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be exploited."},{"lang":"de","value":"Es wurde eine Schwachstelle in Tenda AC21 up to 16.03.08.16 entdeckt. Dabei geht es um die Funktion sscanf der Datei /goform/SetStaticRouteCfg. Dank Manipulation des Arguments list mit unbekannten Daten kann eine buffer overflow-Schwachstelle ausgenutzt werden. Der Angriff lässt sich über das Netzwerk starten. Der Exploit ist öffentlich verfügbar und könnte genutzt werden."}],"affected":[{"vendor":"Tenda","product":"AC21","versions":[{"version":"16.03.08.0","status":"affected"},{"version":"16.03.08.1","status":"affected"},{"version":"16.03.08.2","status":"affected"},{"version":"16.03.08.3","status":"affected"},{"version":"16.03.08.4","status":"affected"},{"version":"16.03.08.5","status":"affected"},{"version":"16.03.08.6","status":"affected"},{"version":"16.03.08.7","status":"affected"},{"version":"16.03.08.8","status":"affected"},{"version":"16.03.08.9","status":"affected"},{"version":"16.03.08.10","status":"affected"},{"version":"16.03.08.11","status":"affected"},{"version":"16.03.08.12","status":"affected"},{"version":"16.03.08.13","status":"affected"},{"version":"16.03.08.14","status":"affected"},{"version":"16.03.08.15","status":"affected"},{"version":"16.03.08.16","status":"affected"}]}],"references":[{"url":"https://vuldb.com/?id.326173","name":"VDB-326173 | Tenda AC21 SetStaticRouteCfg sscanf buffer overflow","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.326173","name":"VDB-326173 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.661806","name":"Submit #661806 | Shenzhen Tenda Technology Co.,Ltd. AC21 <= V16.03.08.16 Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/maximdevere/CVE2/issues/2","tags":["exploit","issue-tracking"]},{"url":"https://www.tenda.com.cn/","tags":["product"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":8.7,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","baseSeverity":"HIGH"}},{"cvssV3_1":{"version":"3.1","baseScore":8.8,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R","baseSeverity":"HIGH"}},{"cvssV3_0":{"version":"3.0","baseScore":8.8,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R","baseSeverity":"HIGH"}},{"cvssV2_0":{"version":"2.0","baseScore":9,"vectorString":"AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-120","type":"CWE","lang":"en","description":"Buffer Overflow"}]},{"descriptions":[{"cweId":"CWE-119","type":"CWE","lang":"en","description":"Memory Corruption"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2025-09-28T01:32:10.696Z"},"timeline":[{"time":"2025-09-27T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2025-09-27T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2025-09-27T07:31:48.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"MaximDeVere (VulDB User)","type":"reporter"}]},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/maximdevere/CVE2/issues/2","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-09-29T14:48:52.752774Z","id":"CVE-2025-11091","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-09-29T14:48:57.508Z"}}]}}}