CVE-2026-4621 - NVD | ByteOS Network

NVD Vulnerability Details :

CVE-2026-4621

Analyzed

More Info Official Page

Source-psirt-info@cyber.jp.nec.com

Published At-27 Mar, 2026 | 12:16

Updated At-20 Apr, 2026 | 15:20

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

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	4.0	6.3	MEDIUM	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary	3.1	5.6	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Type: Secondary

Version: 4.0

Base score: 6.3

Base severity: MEDIUM

Vector:

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Type: Primary

Version: 3.1

Base score: 5.6

Base severity: MEDIUM

Vector:

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CPE Matches

NEC Corporation

>>aterm_wg1200hp4_firmware>>*

cpe:2.3:o:nec:aterm_wg1200hp4_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1200hp4>>-

cpe:2.3:h:nec:aterm_wg1200hp4:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg2600hs_firmware>>Versions before 1.7.2(exclusive)

cpe:2.3:o:nec:aterm_wg2600hs_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg2600hs>>-

cpe:2.3:h:nec:aterm_wg2600hs:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wf1200cr_firmware>>Versions before 1.6.0(exclusive)

cpe:2.3:o:nec:aterm_wf1200cr_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wf1200cr>>-

cpe:2.3:h:nec:aterm_wf1200cr:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1200cr_firmware>>Versions before 1.5.0(exclusive)

cpe:2.3:o:nec:aterm_wg1200cr_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1200cr>>-

cpe:2.3:h:nec:aterm_wg1200cr:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg2600hp4_firmware>>Versions before 1.4.2(exclusive)

cpe:2.3:o:nec:aterm_wg2600hp4_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg2600hp4>>-

cpe:2.3:h:nec:aterm_wg2600hp4:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg2600hm4_firmware>>Versions before 1.4.2(exclusive)

cpe:2.3:o:nec:aterm_wg2600hm4_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg2600hm4>>-

cpe:2.3:h:nec:aterm_wg2600hm4:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg2600hs2_firmware>>Versions before 1.3.2(exclusive)

cpe:2.3:o:nec:aterm_wg2600hs2_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg2600hs2>>-

cpe:2.3:h:nec:aterm_wg2600hs2:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wx3000hp_firmware>>Versions before 2.5.0(exclusive)

cpe:2.3:o:nec:aterm_wx3000hp_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wx3000hp>>-

cpe:2.3:h:nec:aterm_wx3000hp:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wx3600hp_firmware>>Versions up to 1.5.3(inclusive)

cpe:2.3:o:nec:aterm_wx3600hp_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wx3600hp>>-

cpe:2.3:h:nec:aterm_wx3600hp:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_w1200ex-ms_firmware>>*

cpe:2.3:o:nec:aterm_w1200ex-ms_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_w1200ex-ms>>-

cpe:2.3:h:nec:aterm_w1200ex-ms:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1200hp2_firmware>>*

cpe:2.3:o:nec:aterm_wg1200hp2_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1200hp2>>-

cpe:2.3:h:nec:aterm_wg1200hp2:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1900hp_firmware>>*

cpe:2.3:o:nec:aterm_wg1900hp_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1900hp>>-

cpe:2.3:h:nec:aterm_wg1900hp:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1200hs2_firmware>>*

cpe:2.3:o:nec:aterm_wg1200hs2_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1200hs2>>-

cpe:2.3:h:nec:aterm_wg1200hs2:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1800hp3_firmware>>*

cpe:2.3:o:nec:aterm_wg1800hp3_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1800hp3>>-

cpe:2.3:h:nec:aterm_wg1800hp3:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1200hp3_firmware>>*

cpe:2.3:o:nec:aterm_wg1200hp3_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1200hp3>>-

cpe:2.3:h:nec:aterm_wg1200hp3:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1900hp2_firmware>>*

cpe:2.3:o:nec:aterm_wg1900hp2_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1900hp2>>-

cpe:2.3:h:nec:aterm_wg1900hp2:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1200hs3_firmware>>*

cpe:2.3:o:nec:aterm_wg1200hs3_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1200hs3>>-

cpe:2.3:h:nec:aterm_wg1200hs3:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1800hp4_firmware>>*

cpe:2.3:o:nec:aterm_wg1800hp4_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1800hp4>>-

cpe:2.3:h:nec:aterm_wg1800hp4:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1200hs4_firmware>>*

cpe:2.3:o:nec:aterm_wg1200hs4_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wg1200hs4>>-

cpe:2.3:h:nec:aterm_wg1200hs4:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wx1500hp_firmware>>Versions before 1.4.2(exclusive)

cpe:2.3:o:nec:aterm_wx1500hp_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wx1500hp>>-

cpe:2.3:h:nec:aterm_wx1500hp:-:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wx3000hp2_firmware>>Versions before 1.3.2(exclusive)

cpe:2.3:o:nec:aterm_wx3000hp2_firmware:*:*:*:*:*:*:*:*

NEC Corporation

>>aterm_wx3000hp2>>-

cpe:2.3:h:nec:aterm_wx3000hp2:-:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
CWE-912	Secondary	psirt-info@cyber.jp.nec.com

CWE ID: CWE-912

Type: Secondary

Source: psirt-info@cyber.jp.nec.com

References

Hyperlink	Source	Resource
https://jpn.nec.com/security-info/secinfo/nv26-001_en.html	psirt-info@cyber.jp.nec.com	Vendor Advisory

Hyperlink: https://jpn.nec.com/security-info/secinfo/nv26-001_en.html

Source: psirt-info@cyber.jp.nec.com

Resource:

Vendor Advisory