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MEDIUM · 6.8

CVE-2021-20852

Buffer overflow vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege...

Vulnerability Description

Buffer overflow vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege to execute an arbitrary OS command via unspecified vectors.

CVSS Score

6.8

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
ElecomWrh-733Gbk Firmware<= 1.02.9
ElecomWrh-733Gbk-
ElecomWrh-733Gwh Firmware<= 1.02.9
ElecomWrh-733Gwh-

Related Weaknesses (CWE)

CWE-120

References

FAQ

What is CVE-2021-20852?

CVE-2021-20852 is a vulnerability with a CVSS score of 6.8 (MEDIUM). Buffer overflow vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege...

How severe is CVE-2021-20852?

CVE-2021-20852 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20852?

Check the references section above for vendor advisories and patch information. Affected products include: Elecom Wrh-733Gbk Firmware, Elecom Wrh-733Gbk, Elecom Wrh-733Gwh Firmware, Elecom Wrh-733Gwh.