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CVE-2026-31846— Unauthenticated Credential Disclosure via /goform/ate in Nexxt Nebula 300+

Quick assessment

Affected
Nexxt Solutions Nebula 300+ / Tenda F3 V2.0 Firmware
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nexxt Solutions Nebula 300+是美国Nexxt Solutions公司的一款无线路由器。 Nexxt Solutions Nebula 300+ 12.01.01.37及之前版本存在安全漏洞，该漏洞源于/goform/ate端点存在未经验证的凭据泄露，可能导致获取管理员密码。

CVSS 6.5 · Medium EPSS 0.39% · P32

Affected Version Matrix 1

VendorProduct Version RangeStatus
Nexxt Solutions Nebula 300+ / Tenda F3 V2.0 Firmware <= 12.01.01.37 affected
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I. Basic Information for CVE-2026-31846

Vulnerability Information
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Vulnerability Title
Unauthenticated Credential Disclosure via /goform/ate in Nexxt Nebula 300+
Source: CVE Program / CVE List V5
Vulnerability Description
Missing authentication in the /goform/ate endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows an adjacent unauthenticated attacker to retrieve sensitive device information, including the administrator password. An attacker can decode this value to obtain valid administrative credentials and authenticate to the device.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Nexxt Solutions Nebula 300+ 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nexxt Solutions Nebula 300+是美国Nexxt Solutions公司的一款无线路由器。 Nexxt Solutions Nebula 300+ 12.01.01.37及之前版本存在安全漏洞，该漏洞源于/goform/ate端点存在未经验证的凭据泄露，可能导致获取管理员密码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Nexxt Solutions Nebula 300+ / Tenda F3 V2.0 Firmware <= 12.01.01.37 -

II. Public POCs for CVE-2026-31846

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III. Intelligence Information for CVE-2026-31846

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Vendor Pages for CVE-2026-31846 (1)

Other References for CVE-2026-31846 (1)

Same Patch Batch · Nexxt Solutions · 2026-03-23 · 6 CVEs total

CVE-2026-31848 8.7 HIGH Reversible ecos_pw Cookie Allows Authentication Bypass in Nexxt Nebula 300+
CVE-2026-31847 8.5 HIGH Hidden Functionality Enables Remote Telnet Activation via /goform/setSysTools in Nexxt Neb
CVE-2026-31851 7.7 HIGH Nexxt Nebula 300+ - Lack of Rate Limiting Enables Brute-Force Attacks
CVE-2026-31849 7.2 HIGH Missing CSRF Protection on Administrative Endpoints in Nexxt Nebula 300+
CVE-2026-31850 6.8 MEDIUM Plaintext Storage of Credentials in Configuration Backup in Nexxt Nebula 300+

IV. Related Vulnerabilities

Same vendor: Nexxt Solutions
Same weakness: CWE-306

V. Comments for CVE-2026-31846

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