{"id":"CVE-2021-37915","aliases":["EUVD-2021-24392","GHSA-mfhv-6c62-c8w2"],"status":"published","title":"An issue was discovered on the Grandstream HT801 Analog Telephone Adaptor before 1.0.29.8. From...","description":"An issue was discovered on the Grandstream HT801 Analog Telephone Adaptor before 1.0.29.8. From the limited configuration shell, it is possible to set the malicious gdb_debug_server variable. As a result, after a reboot, the device downloads and executes malicious scripts from an attacker-defined host.","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":"2026-11-12","score":0.02029,"percentile":0.81313,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-10-28T11:11:29Z","modified":"2026-06-17T04:01:14Z","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":"http://firmware.grandstream.com/BETA/Release_Note_HT80x_1.0.29.8.pdf","tags":["x_refsource_MISC","x_transferred","Broken Link"]},{"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://nvd.nist.gov/vuln/detail/CVE-2021-37915"},{"url":"https://github.com/advisories/GHSA-mfhv-6c62-c8w2"}],"sources":{"cve":[{"id":"CVE-2021-37915","description":"An issue was discovered on the Grandstream HT801 Analog Telephone Adaptor before 1.0.29.8. From the limited configuration shell, it is possible to set the malicious gdb_debug_server variable. As a result, after a reboot, the device downloads and executes malicious scripts from an attacker-defined host.","status":"published","published":"2021-10-28T11:11:29Z","modified":"2024-08-04T01:30:09.022Z","updated_at":"2026-11-02T14:32:58.359368Z"}],"euvd":[{"id":"EUVD-2021-24392","description":"An issue was discovered on the Grandstream HT801 Analog Telephone Adaptor before 1.0.29.8. From the limited configuration shell, it is possible to set the malicious gdb_debug_server variable. As a result, after a reboot, the device downloads and executes malicious scripts from an attacker-defined host.","status":"published","published":"2021-10-28T11:11:29Z","modified":"2024-08-04T01:30:09Z","updated_at":"2026-11-03T03:24:26.118239Z"}],"ghsa":[{"id":"GHSA-mfhv-6c62-c8w2","title":"An issue was discovered on the Grandstream HT801 Analog Telephone Adaptor before 1.0.29.8. From...","description":"An issue was discovered on the Grandstream HT801 Analog Telephone Adaptor before 1.0.29.8. From the limited configuration shell, it is possible to set the malicious gdb_debug_server variable. As a result, after a reboot, the device downloads and executes malicious scripts from an attacker-defined host.","status":"published","published":"2022-05-24T19:19:10Z","modified":"2023-01-30T05:03:31Z","updated_at":"2026-11-02T14:46:51.429276Z"}],"nvd":[{"id":"CVE-2021-37915","description":"An issue was discovered on the Grandstream HT801 Analog Telephone Adaptor before 1.0.29.8. From the limited configuration shell, it is possible to set the malicious gdb_debug_server variable. As a result, after a reboot, the device downloads and executes malicious scripts from an attacker-defined host.","status":"published","published":"2021-10-28T12:15:08.477Z","modified":"2026-06-17T04:01:14.637Z","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"}],"updated_at":"2026-11-02T14:07:00.549994Z"}]}}