{"cve":"CVE-2022-34840","nvd":{"published":"2022-12-07T10:15:10.303","modified":"2026-06-17T04:51:01.663","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":6.5},"cwes":["CWE-798"],"references":["https://jvn.jp/en/vu/JVNVU92805279/index.html","https://www.buffalo.jp/news/detail/20221003-01.html","https://jvn.jp/en/vu/JVNVU92805279/index.html","https://www.buffalo.jp/news/detail/20221003-01.html"],"products":["buffalo:hw-450hp-zwe_firmware","buffalo:wzr-300hp_firmware","buffalo:wzr-450hp-cwt_firmware","buffalo:wzr-450hp-ub_firmware","buffalo:wzr-450hp_firmware","buffalo:wzr-600dhp2_firmware","buffalo:wzr-600dhp_firmware","buffalo:wzr-900dhp_firmware","buffalo:wzr-d1100h_firmware"],"source":"nvd","synced_at":"2026-10-19T21:37:28.463369388+00:00"},"epss":{"cve":"CVE-2022-34840","score":0.00251,"percentile":0.16527,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}