CVE-2026-4621 | NEC Platforms Aterm W1200EX backdoor

A vulnerability was found in NEC Platforms Aterm W1200EX, Aterm WG1200HP2, Aterm WG1900HP, Aterm WG1200HS2, Aterm WG1800HP3, Aterm WG1200HP3, Aterm WG1900HP2, Aterm WG1200HS3, Aterm WG1800HP4, Aterm WG1200HP4, Aterm WG1200HS4, Aterm WX1500HP, Aterm WG2600HS, Aterm WF1200CR, Aterm WG1200CR, Aterm WG2600HP4, Aterm WG2600HM4, Aterm WG2600HS2, Aterm WX3000HP, Aterm WX3000HP2 and Aterm WX3600HP. It has been rated as critical. Affected by this issue is some unknown functionality. Performing a manipulation results in backdoor.

This vulnerability is identified as CVE-2026-4621. The attack can be initiated remotely. There is not any exploit available.