Medium severity6.8NVD Advisory· Published Dec 1, 2021· Updated Jun 17, 2026

CVE-2021-20853

Description

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 arbitrary OS commands via unspecified vectors.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

ELECOM CO.,LTD./WRH-733GBKllm-fuzzy
Range: firmware v1.02.9 and prior
ELECOM CO.,LTD./wireless LAN routersllm-fuzzy
Range: WRH-733GBK firmware v1.02.9 and prior, WRH-733GWH firmware v1.02.9 and prior
ELECOM CO.,LTD./ELECOM LAN routersv5
Range: WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior

Patches

Vulnerability mechanics

References

jvn.jp/en/jp/JVN88993473/index.htmlnvdThird Party Advisory
www.elecom.co.jp/news/security/20211130-01/nvdVendor Advisory

News mentions

No linked articles in our index yet.

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