NEC Platforms Aterm W1200EX Setting authorization

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in NEC Platforms Aterm W1200EX, Aterm WG1200HP2, Aterm WG1900HP, Aterm WG1200HS2, Aterm WG1800HP3, Aterm WG1200HP3, Aterm WG1900HP2, Aterm WG1200HS3, Aterm WG1800HP4, Aterm WG1200HP4, Aterm WG1200HS4, Aterm WX1500HP, Aterm WG2600HS, Aterm WF1200CR, Aterm WG1200CR, Aterm WG2600HP4, Aterm WG2600HM4, Aterm WG2600HS2, Aterm WX3000HP and Aterm WX3600HP. The impacted element is an unknown function of the component Setting Handler. Executing a manipulation can lead to authorization. This vulnerability is handled as CVE-2026-4309. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in NEC Platforms Aterm W1200EX, Aterm WG1200HP2, Aterm WG1900HP, Aterm WG1200HS2, Aterm WG1800HP3, Aterm WG1200HP3, Aterm WG1900HP2, Aterm WG1200HS3, Aterm WG1800HP4, Aterm WG1200HP4, Aterm WG1200HS4, Aterm WX1500HP, Aterm WG2600HS, Aterm WF1200CR, Aterm WG1200CR, Aterm WG2600HP4, Aterm WG2600HM4, Aterm WG2600HS2, Aterm WX3000HP and Aterm WX3600HP and classified as critical. This vulnerability affects some unknown functionality of the component Setting Handler. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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

The advisory is available at jpn.nec.com. This vulnerability was named CVE-2026-4309 since 03/17/2026. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/27/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/17/2026 CVE reserved
03/27/2026 +10 days Advisory disclosed
03/27/2026 +0 days VulDB entry created
03/27/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: jpn.nec.com
Status: Confirmed

CVE: CVE-2026-4309 (🔒)
GCVE (CVE): GCVE-0-2026-4309
GCVE (VulDB): GCVE-100-353866

Entryinfo

Created: 03/27/2026 13:26
Changes: 03/27/2026 13:26 (63)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!