{"id":"CVE-2021-20091","aliases":["EUVD-2021-7548","GHSA-6rqh-8mhj-w4pr"],"status":"published","title":"The web interfaces of Buffalo WSR-2533DHPL2 firmware version \u003c= 1.02 and WSR-2533DHP3 firmware...","description":"The web interfaces of Buffalo WSR-2533DHPL2 firmware version \u003c= 1.02 and WSR-2533DHP3 firmware version \u003c= 1.24 do not properly sanitize user input. An authenticated remote attacker could leverage this vulnerability to alter device configuration, potentially gaining remote code execution.","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":"2026-11-10","score":0.08458,"percentile":0.95057,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-04-29T14:29:09Z","modified":"2026-06-17T03:33:15Z","exploits":[{"source":"nuclei","id":"CVE-2021-20091","title":"Buffalo WSR-2533DHPL2 - Configuration File Injection","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-20091.yaml"}],"products":[{"vendor":"buffalo","product":"wsr-2533dhp3-bk_firmware"},{"vendor":"buffalo","product":"wsr-2533dhpl2-bk_firmware"}],"references":[{"url":"https://www.tenable.com/security/research/tra-2021-13","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20091"},{"url":"https://github.com/advisories/GHSA-6rqh-8mhj-w4pr"}],"sources":{"cve":[{"id":"CVE-2021-20091","description":"The web interfaces of Buffalo WSR-2533DHPL2 firmware version \u003c= 1.02 and WSR-2533DHP3 firmware version \u003c= 1.24 do not properly sanitize user input. An authenticated remote attacker could leverage this vulnerability to alter device configuration, potentially gaining remote code execution.","status":"published","published":"2021-04-29T14:29:09Z","modified":"2024-08-03T17:30:07.625Z","updated_at":"2026-11-02T14:32:55.19484Z"}],"euvd":[{"id":"EUVD-2021-7548","description":"The web interfaces of Buffalo WSR-2533DHPL2 firmware version \u003c= 1.02 and WSR-2533DHP3 firmware version \u003c= 1.24 do not properly sanitize user input. An authenticated remote attacker could leverage this vulnerability to alter device configuration, potentially gaining remote code execution.","status":"published","published":"2021-04-29T14:29:09Z","modified":"2024-08-03T17:30:07Z","updated_at":"2026-11-03T03:25:09.841069Z"}],"ghsa":[{"id":"GHSA-6rqh-8mhj-w4pr","title":"The web interfaces of Buffalo WSR-2533DHPL2 firmware version \u003c= 1.02 and WSR-2533DHP3 firmware...","description":"The web interfaces of Buffalo WSR-2533DHPL2 firmware version \u003c= 1.02 and WSR-2533DHP3 firmware version \u003c= 1.24 do not properly sanitize user input. An authenticated remote attacker could leverage this vulnerability to alter device configuration, potentially gaining remote code execution.","status":"published","published":"2022-05-24T17:49:13Z","modified":"2023-01-29T05:06:08Z","updated_at":"2026-11-02T14:45:57.128816Z"}],"nvd":[{"id":"CVE-2021-20091","description":"The web interfaces of Buffalo WSR-2533DHPL2 firmware version \u003c= 1.02 and WSR-2533DHP3 firmware version \u003c= 1.24 do not properly sanitize user input. An authenticated remote attacker could leverage this vulnerability to alter device configuration, potentially gaining remote code execution.","status":"published","published":"2021-04-29T15:15:10.66Z","modified":"2026-06-17T03:33:15.64Z","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":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:52.81233Z"}]}}