{"id":"CVE-2021-28846","aliases":["EUVD-2021-15500","GHSA-7xq3-xc97-hhr3"],"status":"published","title":"A Format String vulnerablity exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW...","description":"A Format String vulnerablity exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial of service due to a logic bug at address 0x40dcd0 when calling fprintf with \"%s: key len = %d, too long\\n\" format. The two variables seem to be put in the wrong order. The vulnerability could be triggered by sending the POST request to apply_cgi with a long and unknown key in the request body.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00814,"percentile":0.57341,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-134"],"published":"2021-08-10T19:22:31Z","modified":"2026-06-17T03:46:59Z","products":[{"vendor":"trendnet","product":"tew-755ap2kac_firmware"},{"vendor":"trendnet","product":"tew-755ap_firmware"},{"vendor":"trendnet","product":"tew-821dap2kac_firmware"},{"vendor":"trendnet","product":"tew-825dap_firmware"}],"references":[{"url":"https://github.com/zyw-200/EQUAFL/blob/main/TRENDnet%20ticket.pdf","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-28846"},{"url":"https://github.com/advisories/GHSA-7xq3-xc97-hhr3"}],"sources":{"cve":[{"id":"CVE-2021-28846","description":"A Format String vulnerablity exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial of service due to a logic bug at address 0x40dcd0 when calling fprintf with \"%s: key len = %d, too long\\n\" format. The two variables seem to be put in the wrong order. The vulnerability could be triggered by sending the POST request to apply_cgi with a long and unknown key in the request body.","status":"published","published":"2021-08-10T19:22:31Z","modified":"2024-08-03T21:55:11.827Z","updated_at":"2026-11-02T14:33:08.811269Z"}],"euvd":[{"id":"EUVD-2021-15500","description":"A Format String vulnerablity exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial of service due to a logic bug at address 0x40dcd0 when calling fprintf with \"%s: key len = %d, too long\\n\" format. The two variables seem to be put in the wrong order. The vulnerability could be triggered by sending the POST request to apply_cgi with a long and unknown key in the request body.","status":"published","published":"2021-08-10T19:22:31Z","modified":"2024-08-03T21:55:11Z","updated_at":"2026-11-03T03:24:46.117926Z"}],"ghsa":[{"id":"GHSA-7xq3-xc97-hhr3","title":"A Format String vulnerablity exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW...","description":"A Format String vulnerablity exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial of service due to a logic bug at address 0x40dcd0 when calling fprintf with \"%s: key len = %d, too long\\n\" format. The two variables seem to be put in the wrong order. The vulnerability could be triggered by sending the POST request to apply_cgi with a long and unknown key in the request body.","status":"published","published":"2022-05-24T19:10:31Z","modified":"2023-01-30T05:01:16Z","cwes":["CWE-134"],"updated_at":"2026-11-02T14:46:22.480874Z"}],"nvd":[{"id":"CVE-2021-28846","description":"A Format String vulnerablity exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial of service due to a logic bug at address 0x40dcd0 when calling fprintf with \"%s: key len = %d, too long\\n\" format. The two variables seem to be put in the wrong order. The vulnerability could be triggered by sending the POST request to apply_cgi with a long and unknown key in the request body.","status":"published","published":"2021-08-10T20:15:08.417Z","modified":"2026-06-17T03:46:59.04Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-134"],"updated_at":"2026-11-02T14:06:56.943671Z"}]}}