{"id":"CVE-2026-129352","state":"PUBLISHED","title":"TRENDnet TEW-657BRM upgrade_flash.cgi stack-based overflow","description":"A vulnerability was detected in TRENDnet TEW-657BRM 1.00.1. This issue affects some unknown processing of the file /usr/sbin/upgrade_flash.cgi. Performing a manipulation of the argument boundary results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor explains: \"\"I am not able to confirm if such vulnerability exists as the product has been EOL for more than 15 years. We will send out an announcement letting customers know.\"","publishedAt":"2026-11-14T23:00:27.224Z","updatedAt":"2026-11-14T23:00:27.224Z","severity":{"score":9.4,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P","source":"VulDB"},"assigner":"VulDB","products":["TRENDnet TEW-657BRM"],"affected":[{"vendor":"TRENDnet","product":"TEW-657BRM","versions":[{"version":"1.00.1","status":"affected"}],"cpes":["cpe:2.3:o:trendnet:tew-657brm_firmware:*:*:*:*:*:*:*:*"]}],"references":["https://vuldb.com/vuln/437398","https://vuldb.com/vuln/437398/cti","https://vuldb.com/cve/CVE-2026-129352","https://vuldb.com/submit/1043522","https://github.com/ruanyi101/router-firmware-security-advisories/blob/main/router-firmware-GitHub-advisories/advisories/TRENDnet-TEW-657BRM-upgrade_flash.md"],"weaknesses":["CWE-121","CWE-119"],"ingestedAt":"2026-11-14T23:04:06.498Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/129xxx/CVE-2026-129352.json","commit":"8a526c8ad27de7b6f416812bcc08f31b287f996c","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-129352","state":"PUBLISHED","datePublished":"2026-11-14T23:00:27.224Z","dateUpdated":"2026-11-14T23:00:27.224Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-11-14T06:31:28.857Z"},"containers":{"cna":{"title":"TRENDnet TEW-657BRM upgrade_flash.cgi stack-based overflow","descriptions":[{"lang":"en","value":"A vulnerability was detected in TRENDnet TEW-657BRM 1.00.1. This issue affects some unknown processing of the file /usr/sbin/upgrade_flash.cgi. Performing a manipulation of the argument boundary results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor explains: \"\"I am not able to confirm if such vulnerability exists as the product has been EOL for more than 15 years. We will send out an announcement letting customers know.\""}],"affected":[{"vendor":"TRENDnet","product":"TEW-657BRM","versions":[{"version":"1.00.1","status":"affected"}],"cpes":["cpe:2.3:o:trendnet:tew-657brm_firmware:*:*:*:*:*:*:*:*"]}],"references":[{"url":"https://vuldb.com/vuln/437398","name":"VDB-437398 | TRENDnet TEW-657BRM upgrade_flash.cgi stack-based overflow","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/437398/cti","name":"VDB-437398 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-129352","name":"CVE-2026-129352 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/1043522","name":"Submit #1043522 | TRENDnet TEW-657BRM 1.00.1 Stack-based Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/ruanyi101/router-firmware-security-advisories/blob/main/router-firmware-GitHub-advisories/advisories/TRENDnet-TEW-657BRM-upgrade_flash.md","tags":["exploit","patch"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":9.4,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P","baseSeverity":"CRITICAL"}},{"cvssV3_1":{"version":"3.1","baseScore":9.1,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R","baseSeverity":"CRITICAL"}},{"cvssV3_0":{"version":"3.0","baseScore":9.1,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R","baseSeverity":"CRITICAL"}},{"cvssV2_0":{"version":"2.0","baseScore":8.3,"vectorString":"AV:N/AC:L/Au:M/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":"2026-11-14T23:00:27.224Z"},"timeline":[{"time":"2026-11-14T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-11-14T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-11-14T07:36:40.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"ruanyi (VulDB User)","type":"reporter"},{"lang":"en","value":"VulDB CNA Team","type":"coordinator"}],"x_generator":["VulDB PVTS v202611"]}}}}