{"id":"CVE-2026-2872","state":"PUBLISHED","title":"Tenda A21 MAC Filtering Configuration Endpoint setBlackRule set_device_name stack-based overflow","description":"A security vulnerability has been detected in Tenda A21 1.0.0.0. This vulnerability affects the function set_device_name of the file /goform/setBlackRule of the component MAC Filtering Configuration Endpoint. Such manipulation of the argument devName/mac leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.","publishedAt":"2026-02-21T16:02:10.216Z","updatedAt":"2026-02-23T19:39:05.567Z","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 A21"],"affected":[{"vendor":"Tenda","product":"A21","versions":[{"version":"1.0.0.0","status":"affected"}],"modules":["MAC Filtering Configuration Endpoint"]}],"references":["https://vuldb.com/?id.347109","https://vuldb.com/?ctiid.347109","https://vuldb.com/?submit.754634","https://github.com/QIU-DIE/cve-nneeww/issues/3","https://www.tenda.com.cn/"],"weaknesses":["CWE-121","CWE-119"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/2xxx/CVE-2026-2872.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-2872","state":"PUBLISHED","datePublished":"2026-02-21T16:02:10.216Z","dateUpdated":"2026-02-23T19:39:05.567Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-02-20T14:40:45.438Z"},"containers":{"cna":{"title":"Tenda A21 MAC Filtering Configuration Endpoint setBlackRule set_device_name stack-based overflow","descriptions":[{"lang":"en","value":"A security vulnerability has been detected in Tenda A21 1.0.0.0. This vulnerability affects the function set_device_name of the file /goform/setBlackRule of the component MAC Filtering Configuration Endpoint. Such manipulation of the argument devName/mac leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may be used."}],"affected":[{"vendor":"Tenda","product":"A21","versions":[{"version":"1.0.0.0","status":"affected"}],"modules":["MAC Filtering Configuration Endpoint"]}],"references":[{"url":"https://vuldb.com/?id.347109","name":"VDB-347109 | Tenda A21 MAC Filtering Configuration Endpoint setBlackRule set_device_name stack-based overflow","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.347109","name":"VDB-347109 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.754634","name":"Submit #754634 | Tenda A21 V1.0.0.0 Stack-based Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/QIU-DIE/cve-nneeww/issues/3","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-121","type":"CWE","lang":"en","description":"Stack-based Buffer Overflow"}]},{"descriptions":[{"cweId":"CWE-119","type":"CWE","lang":"en","description":"Memory Corruption"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-02-21T16:02:10.216Z"},"timeline":[{"time":"2026-02-20T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-02-20T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-02-20T15:46:12.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"hhsw34 (VulDB User)","type":"reporter"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-23T19:38:50.216094Z","id":"CVE-2026-2872","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":"2026-02-23T19:39:05.567Z"}}]}}}