PT-2026-28647 · Nec Platforms · Aterm Series

Chuya Hayakawa · Published 2026-03-27 · Updated 2026-04-03 · CVE-2026-4621

Positive Technologies (AI Summary)

CVSS v4.0

6.3

Medium

Base vector

AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions NEC Platforms, Ltd. Aterm Series (affected versions not specified)

Description A hidden functionality exists in NEC Platforms, Ltd. Aterm Series that allows an attacker to enable telnet access via the network.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Hidden Functionality

Weakness Enumeration

CWE-912

Related Identifiers

CVE-2026-4621

Affected Products

Aterm Series

References · 4

• https://jpn.nec.com/security-info/secinfo/nv26-001_en.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-4621 · Security Note
• https://twitter.com/CVEnew/status/2037513346782548066 · Twitter Post
• https://twitter.com/syedaquib77/status/2039909445665251584 · Twitter Post