Vulnerability identifier: #VU52006

Vulnerability risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20709

CWE-ID: CWE-354

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Aterm WF1200CR
Hardware solutions / Routers & switches, VoIP, GSM, etc
Aterm WG1200CR
Hardware solutions / Routers & switches, VoIP, GSM, etc
Aterm WG2600HS
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: NEC Corporation

Description

The vulnerability allows a remote user to compromise the target system.

The vulnerability exists due to improper integrity check. A remote administrator on the local network can send a specially crafted request and execute arbitrary commands on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Aterm WF1200CR: 1.3.2

Aterm WG1200CR: 1.3.3

Aterm WG2600HS: 1.5.1

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External links
http://jvn.jp/en/jp/JVN29739718/index.html
http://jpn.nec.com/security-info/secinfo/nv21-010.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.