CVE-2021-20711 Command injection in Aterm WG2600HS

Critical 9.8 Published 26 Apr 2021 Updated 3 Aug 2024

Attackers can execute arbitrary OS commands on NEC Aterm WG2600HS routers, potentially compromising the device.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-20711?

CVE-2021-20711 is a critical command injection vulnerability in NEC Corporation Aterm WG2600HS, published on 26 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Aterm WG2600HS firmware Ver1.5.1 and earlier allows an attacker to execute arbitrary OS commands via unspecified vectors.

Weakness: CWE-78

Which versions are affected by CVE-2021-20711?

It affects 1 product.

Products include Nec Aterm Wg2600hs Firmware.

How do I fix CVE-2021-20711?

No fix has been published for CVE-2021-20711 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2021-20711 being exploited?

There is no known exploitation of CVE-2021-20711 in the wild and no public exploit code.

Sources

Also known as GHSA-p4fr-76vx-7r7v.