{"id":"CVE-2026-0640","state":"PUBLISHED","title":"Tenda AC23 PowerSaveSet sscanf buffer overflow","description":"A weakness has been identified in Tenda AC23 16.03.07.52. This affects the function sscanf of the file /goform/PowerSaveSet. Executing a manipulation of the argument Time can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.","publishedAt":"2026-01-06T15:32:08.760Z","updatedAt":"2026-02-23T08:21:03.636Z","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 AC23"],"affected":[{"vendor":"Tenda","product":"AC23","versions":[{"version":"16.03.07.52","status":"affected"}],"cpes":["cpe:2.3:o:tenda:ac23_firmware:*:*:*:*:*:*:*:*"]}],"references":["https://vuldb.com/?id.339683","https://vuldb.com/?ctiid.339683","https://vuldb.com/?submit.731772","https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.md","https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.md#poc","https://www.tenda.com.cn/"],"weaknesses":["CWE-120","CWE-119"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/0xxx/CVE-2026-0640.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-0640","state":"PUBLISHED","datePublished":"2026-01-06T15:32:08.760Z","dateUpdated":"2026-02-23T08:21:03.636Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-01-06T09:07:14.569Z"},"containers":{"cna":{"title":"Tenda AC23 PowerSaveSet sscanf buffer overflow","descriptions":[{"lang":"en","value":"A weakness has been identified in Tenda AC23 16.03.07.52. This affects the function sscanf of the file /goform/PowerSaveSet. Executing a manipulation of the argument Time can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks."}],"affected":[{"vendor":"Tenda","product":"AC23","versions":[{"version":"16.03.07.52","status":"affected"}],"cpes":["cpe:2.3:o:tenda:ac23_firmware:*:*:*:*:*:*:*:*"]}],"references":[{"url":"https://vuldb.com/?id.339683","name":"VDB-339683 | Tenda AC23 PowerSaveSet sscanf buffer overflow","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.339683","name":"VDB-339683 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.731772","name":"Submit #731772 | Tenda AC23 V16.03.07.52 Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.md","tags":["broken-link","exploit"]},{"url":"https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.md#poc","tags":["broken-link","exploit"]},{"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":"2026-02-23T08:21:03.636Z"},"timeline":[{"time":"2026-01-06T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-01-06T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-01-15T23:02:06.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"xuanyu (VulDB User)","type":"reporter"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-06T18:08:33.402004Z","id":"CVE-2026-0640","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":"2026-01-06T18:10:01.723Z"}}]}}}