Improper Access Control in ELECOM LAN Routers
CVE-2021-20861

8.8HIGH

Key Information:

Vendor
Elecom Co.,ltd.
Status
Elecom Lan Routers
Vendor
CVE Published:
1 December 2021

Summary

An improper access control issue in ELECOM LAN routers enables an authenticated network-adjacent attacker to bypass security restrictions, gaining unauthorized access to the management interface. This vulnerability affects multiple models and firmware versions, potentially exposing sensitive network configurations and allowing malicious actions. Users are strongly advised to update to the latest firmware to mitigate this risk.

Affected Version(s)

ELECOM LAN routers WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior

References

https://www.elecom.co.jp/news/security/20211130-01/
x_refsource_MISC
https://jvn.jp/en/jp/JVN88993473/index.html
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.