CVE-2021-20712 Auth bypass in NEC Aterm devices
A defect in the IPv6 firewall allows WAN-side attackers to access LAN-connected devices on NEC Aterm routers.
- 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-2021-20712?
CVE-2021-20712 is a medium-severity authentication bypass vulnerability in NEC Aterm devices, published on 26 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper access control vulnerability in NEC Aterm WG2600HS firmware Ver1.5.1 and earlier, and Aterm WX3000HP firmware Ver1.1.2 and earlier allows a device connected to the LAN side to be accessed from the WAN side due to the defect in the IPv6 firewall function.
Which versions are affected by CVE-2021-20712?
It affects 2 products.
Products include Nec Aterm Wg2600hs Firmware, Nec Aterm Wx3000hp Firmware.
How do I fix CVE-2021-20712?
No fix has been published for CVE-2021-20712 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-20712 being exploited?
There is no known exploitation of CVE-2021-20712 in the wild and no public exploit code.
Other vulnerabilities in NEC Aterm devices
Sources
Also known as GHSA-c7vp-4m6m-jg9v.