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Vulnerability record · CVE-2026-4309 · published 27 March 2026

CVE-2026-4309: Nec aterm wg2600hs firmware missing authorization vulnerability

Nec · Aterm Wg2600hs Firmware

Missing Authorization vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to get a specific device information and change the settings via network.

6.3 CVSS 4.0 Medium EPSS 0.23% · top 87.3% CWE-862 · Missing authorization
6.3CVSS 4.0 base score
0.23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
20Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Missing Authorization vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to get a specific device information and change the settings via network.

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:

Affected products

20 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://jpn.nec.com/security-info/secinfo/nv26-001_en.html Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-28007Nec aterm wg1800hp4 firmware improper authentication vulnerabilityImproper authentication vulnerability in NEC Corporation Aterm WG1800HP4, WG1200HS3, WG1900HP2, WG1200HP3, WG1800HP3, WG1200HS2, WG1900HP, WG1200HP2,…EPSS 0.65%9.8CVE-2024-28008Nec aterm wg1800hp4 firmware vulnerabilityActive Debug Code in NEC Corporation Aterm WG1800HP4, WG1200HS3, WG1900HP2, WG1200HP3, WG1800HP3, WG1200HS2, WG1900HP, WG1200HP2, W1200EX(-MS), WG120…EPSS 0.62%9.8CVE-2024-28009Nec aterm wg1800hp4 firmware improper authentication vulnerabilityImproper authentication vulnerability in NEC Corporation Aterm WG1800HP4, WG1200HS3, WG1900HP2, WG1200HP3, WG1800HP3, WG1200HS2, WG1900HP, WG1200HP2,…EPSS 0.65%9.8CVE-2024-28010Nec aterm wg1800hp4 firmware hard-coded password vulnerabilityUse of Hard-coded Password in NEC Corporation Aterm WG1800HP4, WG1200HS3, WG1900HP2, WG1200HP3, WG1800HP3, WG1200HS2, WG1900HP, WG1200HP2, W1200EX(-M…EPSS 0.58%9.8CVE-2024-28011Nec aterm wg1800hp4 firmware vulnerabilityHidden Functionality vulnerability in NEC Corporation Aterm WG1800HP4, WG1200HS3, WG1900HP2, WG1200HP3, WG1800HP3, WG1200HS2, WG1900HP, WG1200HP2, W1…EPSS 0.62%9.8CVE-2024-28012Nec aterm wg1800hp4 firmware improper authentication vulnerabilityImproper authentication vulnerability in NEC Corporation Aterm WG1800HP4, WG1200HS3, WG1900HP2, WG1200HP3, WG1800HP3, WG1200HS2, WG1900HP, WG1200HP2,…EPSS 0.74%9.8CVE-2024-28014Nec aterm wg1800hp4 firmware stack-based buffer overflow vulnerabilityStack-based Buffer Overflow vulnerability in NEC Corporation Aterm WG1800HP4, WG1200HS3, WG1900HP2, WG1200HP3, WG1800HP3, WG1200HS2, WG1900HP, WG1200…EPSS 0.69%9.8CVE-2024-28015Nec aterm wg1800hp4 firmware os command injection vulnerabilityImproper Neutralization of Special Elements used in an OS Command vulnerability in NEC Corporation Aterm WG1800HP4, WG1200HS3, WG1900HP2, WG1200HP3, …EPSS 0.67%

Source: NIST National Vulnerability Database (record CVE-2026-4309), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.