Buffer overflow in Elecom Wrh-733gbk
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 to execute an arbitrary OS command via unspecified vectors.
Vulnerability class: Buffer Overflow
EPSS: 0.005 (37.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Elecom Wrh-733gbk
- Elecom Wrh-733gbk_firmware
- Elecom Wrh-733gwh
- Elecom Wrh-733gwh_firmware
- Elecom Co.,ltd. Lan Routers — versions WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior
Weakness classification (CWE)
References
- vultures@jpcert.or.jp (x_refsource_MISC, Vendor Advisory)
- vultures@jpcert.or.jp (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-20852?
- CVE-2021-20852 is a medium-severity vulnerability in Elecom Wrh-733gbk, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.8/10. Published 2021-12-01.
- How severe is CVE-2021-20852?
- Medium severity. CVSS v3 base score is 6.8 out of 10.