What’s Vulnerable › Vulnerabilities

CVE-2022-21173

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-02-08 · updated 2026-06-17

Description

Hidden functionality vulnerability in ELECOM LAN routers (WRH-300BK3 firmware v1.05 and earlier, WRH-300WH3 firmware v1.05 and earlier, WRH-300BK3-S firmware v1.05 and earlier, WRH-300DR3-S firmware v1.05 and earlier, WRH-300LB3-S firmware v1.05 and earlier, WRH-300PN3-S firmware v1.05 and earlier, WRH-300WH3-S firmware v1.05 and earlier, and WRH-300YG3-S firmware v1.05 and earlier) allows an attacker on the adjacent network to execute an arbitrary OS command via unspecified vectors.

Affected products

• Elecom Wrh-300Bk3-S Firmware: through 1.05
• Elecom Wrh-300Bk3 Firmware: through 1.05
• Elecom Wrh-300Dr3-S Firmware: through 1.05
• Elecom Wrh-300Lb3-S Firmware: through 1.05
• Elecom Wrh-300Pn3-S Firmware: through 1.05
• Elecom Wrh-300Wh3-S Firmware: through 1.05
• Elecom Wrh-300Wh3 Firmware: through 1.05
• Elecom Wrh-300Yg3-S Firmware: through 1.05

References

• https://jvn.jp/en/jp/JVN17482543/index.html
• https://www.elecom.co.jp/news/security/20220208-02/
• https://jvn.jp/en/jp/JVN17482543/index.html
• https://www.elecom.co.jp/news/security/20220208-02/

Get alerted when CVE-2022-21173 or the next vulnerability affects your stack