{"id":"CVE-2021-37748","aliases":["EUVD-2021-24229","GHSA-6mx4-p8p9-328j"],"status":"published","title":"Multiple buffer overflows in the limited configuration shell (/sbin/gs_config) on Grandstream...","description":"Multiple buffer overflows in the limited configuration shell (/sbin/gs_config) on Grandstream HT801 devices before 1.0.29 allow remote authenticated users to execute arbitrary code as root via a crafted manage_if setting, thus bypassing the intended restrictions of this shell and taking full control of the device. There are default weak credentials that can be used to authenticate.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.07408,"percentile":0.94479,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-787"],"published":"2021-10-28T11:11:20Z","modified":"2026-06-17T04:01:05Z","exploits":[{"source":"pocgithub","id":"SECFORCE/CVE-2021-37748","title":"SECFORCE/CVE-2021-37748","date":"2021-10-25","url":"https://github.com/SECFORCE/CVE-2021-37748"}],"products":[{"vendor":"grandstream","product":"ht801_firmware"}],"references":[{"url":"http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory"]},{"url":"https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://github.com/SECFORCE/CVE-2021-37748","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-37748"},{"url":"https://github.com/advisories/GHSA-6mx4-p8p9-328j"}],"sources":{"cve":[{"id":"CVE-2021-37748","description":"Multiple buffer overflows in the limited configuration shell (/sbin/gs_config) on Grandstream HT801 devices before 1.0.29 allow remote authenticated users to execute arbitrary code as root via a crafted manage_if setting, thus bypassing the intended restrictions of this shell and taking full control of the device. There are default weak credentials that can be used to authenticate.","status":"published","published":"2021-10-28T11:11:20Z","modified":"2024-08-04T01:30:07.528Z","updated_at":"2026-11-02T14:32:58.359368Z"}],"euvd":[{"id":"EUVD-2021-24229","description":"Multiple buffer overflows in the limited configuration shell (/sbin/gs_config) on Grandstream HT801 devices before 1.0.29 allow remote authenticated users to execute arbitrary code as root via a crafted manage_if setting, thus bypassing the intended restrictions of this shell and taking full control of the device. There are default weak credentials that can be used to authenticate.","status":"published","published":"2021-10-28T11:11:20Z","modified":"2024-08-04T01:30:07Z","updated_at":"2026-11-03T03:24:26.118239Z"}],"ghsa":[{"id":"GHSA-6mx4-p8p9-328j","title":"Multiple buffer overflows in the limited configuration shell (/sbin/gs_config) on Grandstream...","description":"Multiple buffer overflows in the limited configuration shell (/sbin/gs_config) on Grandstream HT801 devices before 1.0.29 allow remote authenticated users to execute arbitrary code as root via a crafted manage_if setting, thus bypassing the intended restrictions of this shell and taking full control of the device. There are default weak credentials that can be used to authenticate.","status":"published","published":"2022-05-24T19:19:11Z","modified":"2023-01-30T05:03:29Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:46:50.963031Z"}],"nvd":[{"id":"CVE-2021-37748","description":"Multiple buffer overflows in the limited configuration shell (/sbin/gs_config) on Grandstream HT801 devices before 1.0.29 allow remote authenticated users to execute arbitrary code as root via a crafted manage_if setting, thus bypassing the intended restrictions of this shell and taking full control of the device. There are default weak credentials that can be used to authenticate.","status":"published","published":"2021-10-28T12:15:08.413Z","modified":"2026-06-17T04:01:05.933Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:07:00.549994Z"}]}}