Improper Access Control in ELECOM Routers
CVE-2021-20864

8.8HIGH

Key Information:

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

Summary

An improper access control vulnerability exists in specific ELECOM routers, whereby an unauthenticated attacker on the same network may exploit this flaw to bypass access restrictions. This may lead to the ability to start the telnet service and execute arbitrary operating system commands, posing significant risks to network security and integrity. Updates to the firmware are recommended to mitigate these risks.

Affected Version(s)

ELECOM 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/vu/JVNVU94527926/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

.