CVE-2022-39044: Buffalo Bhr-4grv Firmware

Medium severity, CVSS 6.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Hidden functionality vulnerability in multiple Buffalo network devices allows a network-adjacent attacker with an administrative privilege to execute an arbitrary OS command. The affected products/versions are as follows: WCR-300 firmware Ver. 1.87 and earlier, WHR-HP-G300N firmware Ver. 2.00 and earlier, WHR-HP-GN firmware Ver. 1.87 and earlier, WPL-05G300 firmware Ver. 1.88 and earlier, 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, WZR-HP-AG300H firmware Ver. 1.76 and earlier, WZR-HP-G302H firmware Ver. 1.86 and earlier, WLAE-AG300N firmware Ver. 1.86 and earlier, FS-600DHP firmware Ver. 3.40 and earlier, FS-G300N firmware Ver. 3.14 and earlier, FS-HP-G300N firmware Ver. 3.33 and earlier, FS-R600DHP firmware Ver. 3.40 and earlier, BHR-4GRV firmware Ver. 2.00 and earlier, DWR-HP-G300NH firmware Ver. 1.84 and earlier, DWR-PG firmware Ver. 1.83 and earlier, HW-450HP-ZWE firmware Ver. 2.00 and earlier, WER-A54G54 firmware Ver. 1.43 and earlier, WER-AG54 firmware Ver. 1.43 and earlier, WER-AM54G54 firmware Ver. 1.43 and earlier, WER-AMG54 firmware Ver. 1.43 and earlier, WHR-300 firmware Ver. 2.00 and earlier, WHR-300HP firmware Ver. 2.00 and earlier, WHR-AM54G54 firmware Ver. 1.43 and earlier, WHR-AMG54 firmware Ver. 1.43 and earlier, WHR-AMPG firmware Ver. 1.52 and earlier, WHR-G firmware Ver. 1.49 and earlier, WHR-G300N firmware Ver. 1.65 and earlier, WHR-G301N firmware Ver. 1.87 and earlier, WHR-G54S firmware Ver. 1.43 and earlier, WHR-G54S-NI firmware Ver. 1.24 and earlier, WHR-HP-AMPG firmware Ver. 1.43 and earlier, WHR-HP-G firmware Ver. 1.49 and earlier, WHR-HP-G54 firmware Ver. 1.43 and earlier, WLI-H4-D600 firmware Ver. 1.88 and earlier, WLI-TX4-AG300N firmware Ver. 1.53 and earlier, WS024BF firmware Ver. 1.60 and earlier, WS024BF-NW firmware Ver. 1.60 and earlier, WZR2-G108 firmware Ver. 1.33 and earlier, WZR2-G300N firmware Ver. 1.55 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, WZR-AGL300NH firmware Ver. 1.55 and earlier, WZR-AMPG144NH firmware Ver. 1.49 and earlier, WZR-AMPG300NH firmware Ver. 1.51 and earlier, WZR-D1100H firmware Ver. 2.00 and earlier, WZR-G144N firmware Ver. 1.48 and earlier, WZR-G144NH firmware Ver. 1.48 and earlier, WZR-HP-G300NH firmware Ver. 1.84 and earlier, WZR-HP-G301NH firmware Ver. 1.84 and earlier, and WZR-HP-G450H firmware Ver. 1.90 and earlier.

Affected products

  • Buffalo Bhr-4grv Firmware: up to and including 2.00
  • Buffalo Dwr-HP-g300nh Firmware: up to and including 1.84
  • Buffalo Dwr-Pg Firmware: up to and including 1.83
  • Buffalo Fs-600dhp Firmware: up to and including 3.40
  • Buffalo Fs-g300n Firmware: up to and including 3.14
  • Buffalo Fs-HP-g300n Firmware: up to and including 3.33
  • Buffalo Fs-r600dhp Firmware: up to and including 3.40
  • Buffalo Hw-450hp-Zwe Firmware: up to and including 2.00
  • Buffalo Wcr-300 Firmware: up to and including 1.87
  • Buffalo Wer-a54g54 Firmware: up to and including 1.43
  • Buffalo Wer-AG54 Firmware: up to and including 1.43
  • Buffalo Wer-AM54G54 Firmware: up to and including 1.43
  • Buffalo Wer-AMG54 Firmware: up to and including 1.43
  • Buffalo Whr-300 Firmware: up to and including 2.00
  • Buffalo Whr-300hp Firmware: up to and including 2.00
  • Buffalo Whr-AM54G54 Firmware: up to and including 1.43
  • Buffalo Whr-AMG54 Firmware: up to and including 1.43
  • Buffalo Whr-Ampg Firmware: up to and including 1.52
  • Buffalo Whr-g300n Firmware: up to and including 1.65
  • Buffalo Whr-g301n Firmware: up to and including 1.87
  • Buffalo Whr-g54s-Ni Firmware: up to and including 1.24
  • Buffalo Whr-g54s Firmware: up to and including 1.43
  • Buffalo Whr-G Firmware: up to and including 1.49
  • Buffalo Whr-HP-Ampg Firmware: up to and including 1.49
  • Buffalo Whr-HP-g300n Firmware: up to and including 2.00
  • and 29 more

Published 2022-12-07. Last modified 2026-06-17.