Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2026-4621


Hidden Functionality vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to enable telnet via network.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.6, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts limited data confidentiality, limited integrity, and limited availability for affected systems. Impacting 42 products from nec, from nec, from nec and 39 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2026, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2026-03-27T12:16:20.910

Last Modified

2026-04-20T15:20:06.500

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 5.6 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-912

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System nec aterm_wg1200hp4_firmware * Yes
Hardware nec aterm_wg1200hp4 - No
Operating System nec aterm_wg2600hs_firmware < 1.7.2 Yes
Hardware nec aterm_wg2600hs - No
Operating System nec aterm_wf1200cr_firmware < 1.6.0 Yes
Hardware nec aterm_wf1200cr - No
Operating System nec aterm_wg1200cr_firmware < 1.5.0 Yes
Hardware nec aterm_wg1200cr - No
Operating System nec aterm_wg2600hp4_firmware < 1.4.2 Yes
Hardware nec aterm_wg2600hp4 - No
Operating System nec aterm_wg2600hm4_firmware < 1.4.2 Yes
Hardware nec aterm_wg2600hm4 - No
Operating System nec aterm_wg2600hs2_firmware < 1.3.2 Yes
Hardware nec aterm_wg2600hs2 - No
Operating System nec aterm_wx3000hp_firmware < 2.5.0 Yes
Hardware nec aterm_wx3000hp - No
Operating System nec aterm_wx3600hp_firmware ≤ 1.5.3 Yes
Hardware nec aterm_wx3600hp - No
Operating System nec aterm_w1200ex-ms_firmware * Yes
Hardware nec aterm_w1200ex-ms - No
Operating System nec aterm_wg1200hp2_firmware * Yes
Hardware nec aterm_wg1200hp2 - No
Operating System nec aterm_wg1900hp_firmware * Yes
Hardware nec aterm_wg1900hp - No
Operating System nec aterm_wg1200hs2_firmware * Yes
Hardware nec aterm_wg1200hs2 - No
Operating System nec aterm_wg1800hp3_firmware * Yes
Hardware nec aterm_wg1800hp3 - No
Operating System nec aterm_wg1200hp3_firmware * Yes
Hardware nec aterm_wg1200hp3 - No
Operating System nec aterm_wg1900hp2_firmware * Yes
Hardware nec aterm_wg1900hp2 - No
Operating System nec aterm_wg1200hs3_firmware * Yes
Hardware nec aterm_wg1200hs3 - No
Operating System nec aterm_wg1800hp4_firmware * Yes
Hardware nec aterm_wg1800hp4 - No
Operating System nec aterm_wg1200hs4_firmware * Yes
Hardware nec aterm_wg1200hs4 - No
Operating System nec aterm_wx1500hp_firmware < 1.4.2 Yes
Hardware nec aterm_wx1500hp - No
Operating System nec aterm_wx3000hp2_firmware < 1.3.2 Yes
Hardware nec aterm_wx3000hp2 - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For nec's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.