{"id":"CVE-2022-34840","aliases":["EUVD-2022-37746","GHSA-pgrg-rvjm-c6vq"],"status":"published","title":"Use of hard-coded credentials vulnerability in multiple Buffalo network devices allows a network...","description":"Use of hard-coded credentials vulnerability in multiple Buffalo network devices allows a network-adjacent attacker to alter?configuration settings of the device. The affected products/versions are as follows: WZR-300HP firmware Ver. 2.00 and earlier, WZR-450HP firmware Ver. 2.00 and earlier, WZR-600DHP firmware Ver. 2.00 and earlier, WZR-900DHP firmware Ver. 1.15 and earlier, HW-450HP-ZWE firmware Ver. 2.00 and earlier, WZR-450HP-CWT firmware Ver. 2.00 and earlier, WZR-450HP-UB firmware Ver. 2.00 and earlier, WZR-600DHP2 firmware Ver. 1.15 and earlier, and WZR-D1100H firmware Ver. 2.00 and earlier.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00251,"percentile":0.1657,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-798"],"published":"2022-12-07T00:00:00Z","modified":"2026-06-17T04:51:01Z","products":[{"vendor":"buffalo","product":"hw-450hp-zwe_firmware"},{"vendor":"buffalo","product":"wzr-300hp_firmware"},{"vendor":"buffalo","product":"wzr-450hp-cwt_firmware"},{"vendor":"buffalo","product":"wzr-450hp-ub_firmware"},{"vendor":"buffalo","product":"wzr-450hp_firmware"},{"vendor":"buffalo","product":"wzr-600dhp2_firmware"},{"vendor":"buffalo","product":"wzr-600dhp_firmware"},{"vendor":"buffalo","product":"wzr-900dhp_firmware"},{"vendor":"buffalo","product":"wzr-d1100h_firmware"},{"vendor":"buffalo inc.","product":"buffalo network devices"}],"references":[{"url":"https://www.buffalo.jp/news/detail/20221003-01.html","tags":["x_transferred","Patch","Vendor Advisory"]},{"url":"https://jvn.jp/en/vu/JVNVU92805279/index.html","tags":["x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-34840"},{"url":"https://github.com/advisories/GHSA-pgrg-rvjm-c6vq"}],"sources":{"cve":[{"id":"CVE-2022-34840","description":"Use of hard-coded credentials vulnerability in multiple Buffalo network devices allows a network-adjacent attacker to alter?configuration settings of the device. The affected products/versions are as follows: WZR-300HP firmware Ver. 2.00 and earlier, WZR-450HP firmware Ver. 2.00 and earlier, WZR-600DHP firmware Ver. 2.00 and earlier, WZR-900DHP firmware Ver. 1.15 and earlier, HW-450HP-ZWE firmware Ver. 2.00 and earlier, WZR-450HP-CWT firmware Ver. 2.00 and earlier, WZR-450HP-UB firmware Ver. 2.00 and earlier, WZR-600DHP2 firmware Ver. 1.15 and earlier, and WZR-D1100H firmware Ver. 2.00 and earlier.","status":"published","published":"2022-12-07T00:00:00Z","modified":"2025-04-23T16:10:12.366Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-798"],"updated_at":"2026-11-02T14:34:42.354707Z"}],"euvd":[{"id":"EUVD-2022-37746","description":"Use of hard-coded credentials vulnerability in multiple Buffalo network devices allows a network-adjacent attacker to alter?configuration settings of the device. The affected products/versions are as follows: WZR-300HP firmware Ver. 2.00 and earlier, WZR-450HP firmware Ver. 2.00 and earlier, WZR-600DHP firmware Ver. 2.00 and earlier, WZR-900DHP firmware Ver. 1.15 and earlier, HW-450HP-ZWE firmware Ver. 2.00 and earlier, WZR-450HP-CWT firmware Ver. 2.00 and earlier, WZR-450HP-UB firmware Ver. 2.00 and earlier, WZR-600DHP2 firmware Ver. 1.15 and earlier, and WZR-D1100H firmware Ver. 2.00 and earlier.","status":"published","published":"2022-12-07T00:00:00Z","modified":"2025-04-23T16:10:12Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T20:52:13.204099Z"}],"ghsa":[{"id":"GHSA-pgrg-rvjm-c6vq","title":"Use of hard-coded credentials vulnerability in multiple Buffalo network devices allows a network...","description":"Use of hard-coded credentials vulnerability in multiple Buffalo network devices allows a network-adjacent attacker to alter?configuration settings of the device. The affected products/versions are as follows: WZR-300HP firmware Ver. 2.00 and earlier, WZR-450HP firmware Ver. 2.00 and earlier, WZR-600DHP firmware Ver. 2.00 and earlier, WZR-900DHP firmware Ver. 1.15 and earlier, HW-450HP-ZWE firmware Ver. 2.00 and earlier, WZR-450HP-CWT firmware Ver. 2.00 and earlier, WZR-450HP-UB firmware Ver. 2.00 and earlier, WZR-600DHP2 firmware Ver. 1.15 and earlier, and WZR-D1100H firmware Ver. 2.00 and earlier.","status":"published","published":"2022-12-07T12:30:29Z","modified":"2023-01-28T05:06:06Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-798"],"updated_at":"2026-11-02T14:44:24.376453Z"}],"nvd":[{"id":"CVE-2022-34840","description":"Use of hard-coded credentials vulnerability in multiple Buffalo network devices allows a network-adjacent attacker to alter?configuration settings of the device. The affected products/versions are as follows: WZR-300HP firmware Ver. 2.00 and earlier, WZR-450HP firmware Ver. 2.00 and earlier, WZR-600DHP firmware Ver. 2.00 and earlier, WZR-900DHP firmware Ver. 1.15 and earlier, HW-450HP-ZWE firmware Ver. 2.00 and earlier, WZR-450HP-CWT firmware Ver. 2.00 and earlier, WZR-450HP-UB firmware Ver. 2.00 and earlier, WZR-600DHP2 firmware Ver. 1.15 and earlier, and WZR-D1100H firmware Ver. 2.00 and earlier.","status":"published","published":"2022-12-07T10:15:10.303Z","modified":"2026-06-17T04:51:01.663Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-798"],"updated_at":"2026-11-02T14:07:33.239526Z"}]}}