CVE-2026-4309
Received Received - Intake
Missing Authorization in NEC Aterm Devices Enables Settings Modification

Publication date: 2026-03-27

Last updated on: 2026-04-20

Assigner: NEC Corporation

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.
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Meta Information
Published
2026-03-27
Last Modified
2026-04-20
Generated
2026-06-16
AI Q&A
2026-03-27
EPSS Evaluated
2026-06-15
NVD
CVE-2026-4309
EUVD
EUVD-2026-16583
Affected Vendors & Products
Showing 20 associated CPEs
Vendor Product Version / Range
nec aterm_wg2600hs_firmware to 1.7.2 (exc)
nec aterm_wf1200cr_firmware to 1.6.0 (exc)
nec aterm_wg1200cr_firmware to 1.5.0 (exc)
nec aterm_wg2600hp4_firmware to 1.4.2 (exc)
nec aterm_wg2600hm4_firmware to 1.4.2 (exc)
nec aterm_wg2600hs2_firmware to 1.3.2 (exc)
nec aterm_wx3000hp_firmware to 2.5.0 (exc)
nec aterm_wx3600hp_firmware to 1.5.3 (inc)
nec aterm_w1200ex-ms_firmware *
nec aterm_wg1200hp2_firmware *
nec aterm_wg1900hp_firmware *
nec aterm_wg1200hs2_firmware *
nec aterm_wg1800hp3_firmware *
nec aterm_wg1200hp3_firmware *
nec aterm_wg1900hp2_firmware *
nec aterm_wg1200hs3_firmware *
nec aterm_wg1800hp4_firmware *
nec aterm_wg1200hp4_firmware *
nec aterm_wg1200hs4_firmware *
nec aterm_wx1500hp_firmware to 1.4.2 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
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Compliance Impact

The vulnerability CVE-2026-4309 allows unauthorized access to specific device information and the ability to change device settings via the network. This unauthorized access could potentially lead to exposure or manipulation of sensitive data managed by the affected devices.

Such unauthorized access and control may impact compliance with common standards and regulations like GDPR and HIPAA, which require strict access controls and protection of sensitive information to prevent unauthorized disclosure or modification.

However, the provided resources do not explicitly discuss the direct impact of this vulnerability on compliance with these standards or regulations.

Mitigation Strategies

To mitigate the CVE-2026-4309 vulnerability in NEC Aterm series devices, the immediate step is to update the device firmware to the fixed versions provided by NEC.

This vulnerability allows unauthorized access to device information and settings changes, so applying the firmware update is critical to prevent exploitation.

Executive Summary

This vulnerability is a Missing Authorization issue in NEC Platforms, Ltd. Aterm Series devices. It allows an attacker to access specific device information and change the device settings over the network without proper authorization.

Impact Analysis

An attacker exploiting this vulnerability can obtain sensitive device information and modify device settings remotely. This could lead to unauthorized changes in device configuration, potential disruption of device functionality, and exposure of sensitive data.

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