CVE-2026-4621: Hidden Functionality vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to enable telnet via network.

Description

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

Vendor	Product	Versions
nec platforms	aterm w1200ex(-ms)	All versions, All versions, All versions, All versions, All versions, All versions, All versions, All versions, All versions, All versions, All versions, Before Ver. 1.4.2, Before Ver. 1.7.2, Before Ver. 1.6.0, Before Ver. 1.5.0, Before Ver. 1.4.2, Before Ver. 1.4.2, Before Ver. 1.3.2, Before Ver. 2.5.0, Before Ver. 1.3.2, Before Ver. 1.4.2

Tier C

VulDB2h ago

→ No new info (linked only)

CISA KEV❌ No

Actively exploited✅ Yes

CWECWE-912

Published3/27/2026

Last enriched2h agov2

Trending Score50

Source articles1

Independent1

Info Completeness7/14

Missing: cvss, epss, kev, exploit, patch, iocs, mitre_attack

0 upvotes0 downvotes

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State: unverified

Confidence: 0%

Last enriched 2h ago

v2Tier C2h ago

Updated vendor to 'NEC Platforms', added new affected products, changed severity to 'CRITICAL', and marked the vulnerability as actively exploited.

affectedVersionsseverityactivelyExploited

via VulDB

v12h ago

Initial creation