CVE-2026-4621

published 2026-03-27

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

Priority P3 33 medium 5.6 CVSS 3.1

AV N AC H PR N UI N S U C L I L A L

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

Affected

35 ranges · showing 25

Vendor	Product	Version range	Fixed in
nec	aterm_wf1200cr_firmware	< 1.6.0	1.6.0
nec	aterm_wg1200cr_firmware	< 1.5.0	1.5.0
nec	aterm_wg2600hm4_firmware	< 1.4.2	1.4.2
nec	aterm_wg2600hp4_firmware	< 1.4.2	1.4.2
nec	aterm_wg2600hs2_firmware	< 1.3.2	1.3.2
nec	aterm_wg2600hs_firmware	< 1.7.2	1.7.2
nec	aterm_wx1500hp_firmware	< 1.4.2	1.4.2
nec	aterm_wx3000hp2_firmware	< 1.3.2	1.3.2
nec	aterm_wx3000hp_firmware	< 2.5.0	2.5.0
nec	aterm_wx3600hp_firmware	<= 1.5.3	—
nec_platforms_ltd	aterm_gb1200pe	—	—
nec_platforms_ltd	aterm_gx1200hp	—	—
nec_platforms_ltd	aterm_gx1200hs4	—	—
nec_platforms_ltd	aterm_w1200ex	—	—
nec_platforms_ltd	aterm_wf1200cr	—	—
nec_platforms_ltd	aterm_wg1200cr	—	—
nec_platforms_ltd	aterm_wg1200dm4	—	—
nec_platforms_ltd	aterm_wg1200hp2	—	—
nec_platforms_ltd	aterm_wg1200hp3	—	—
nec_platforms_ltd	aterm_wg1200hp4	—	—
nec_platforms_ltd	aterm_wg1200hs2	—	—
nec_platforms_ltd	aterm_wg1200hs3	—	—
nec_platforms_ltd	aterm_wg1200hs4	—	—
nec_platforms_ltd	aterm_wg1800hp3	—	—
nec_platforms_ltd	aterm_wg1800hp4	—	—

CVSS provenance

nvd v3.1 5.6 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

nvd v4.0 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

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-912