CVE-2021-20852: Buffer Overflow
First published: Wed Dec 01 2021(Updated: )
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.
Credit: vultures@jpcert.or.jp
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Elecom Wrh-733gbk Firmware | <=1.02.9 | |
| Elecom Wrh-733gbk | ||
| Elecom Wrh-733gwh Firmware | <=1.02.9 | |
| Elecom Wrh-733gwh |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this buffer overflow vulnerability in ELECOM LAN routers?
The vulnerability ID of this buffer overflow vulnerability in ELECOM LAN routers is CVE-2021-20852.
What is the affected firmware version for WRH-733GBK routers?
WRH-733GBK routers with firmware version 1.02.9 and prior are affected.
What is the affected firmware version for WRH-733GWH routers?
WRH-733GWH routers with firmware version 1.02.9 and prior are affected.
What is the severity of CVE-2021-20852?
The severity of CVE-2021-20852 is medium, with a CVSS score of 6.8.
How can an attacker exploit this vulnerability?
A network-adjacent attacker with an administrator privilege can exploit this vulnerability by executing an arbitrary OS command via unspecified vectors.
- collector/nvd-index
- agent/author
- agent/severity
- agent/references
- agent/weakness
- agent/type
- agent/description
- agent/event
- agent/softwarecombine
- agent/first-publish-date
- agent/last-modified-date
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/elecom
- canonical/elecom wrh-733gbk firmware
- version/elecom wrh-733gbk firmware/1.02.9
- canonical/elecom wrh-733gbk
- canonical/elecom wrh-733gwh firmware
- version/elecom wrh-733gwh firmware/1.02.9
- canonical/elecom wrh-733gwh