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MEDIUM · 5.6

CVE-2026-4621

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

Vulnerability Description

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

CVSS Score

5.6

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW

Affected Products

VendorProductVersions
NecAterm Wg1200Hp4 FirmwareAll versions
NecAterm Wg1200Hp4-
NecAterm Wg2600Hs Firmware< 1.7.2
NecAterm Wg2600Hs-
NecAterm Wf1200Cr Firmware< 1.6.0
NecAterm Wf1200Cr-
NecAterm Wg1200Cr Firmware< 1.5.0
NecAterm Wg1200Cr-
NecAterm Wg2600Hp4 Firmware< 1.4.2
NecAterm Wg2600Hp4-
NecAterm Wg2600Hm4 Firmware< 1.4.2
NecAterm Wg2600Hm4-
NecAterm Wg2600Hs2 Firmware< 1.3.2
NecAterm Wg2600Hs2-
NecAterm Wx3000Hp Firmware< 2.5.0
NecAterm Wx3000Hp-
NecAterm Wx3600Hp Firmware<= 1.5.3
NecAterm Wx3600Hp-
NecAterm W1200Ex-Ms FirmwareAll versions
NecAterm W1200Ex-Ms-

Related Weaknesses (CWE)

CWE-912

References

FAQ

What is CVE-2026-4621?

CVE-2026-4621 is a vulnerability with a CVSS score of 5.6 (MEDIUM). Hidden Functionality vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to enable telnet via network.

How severe is CVE-2026-4621?

CVE-2026-4621 has been rated MEDIUM with a CVSS base score of 5.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-4621?

Check the references section above for vendor advisories and patch information. Affected products include: Nec Aterm Wg1200Hp4 Firmware, Nec Aterm Wg1200Hp4, Nec Aterm Wg2600Hs Firmware, Nec Aterm Wg2600Hs, Nec Aterm Wf1200Cr Firmware.