CVE-2026-31846— Unauthenticated Credential Disclosure via /goform/ate in Nexxt Nebula 300+
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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: NVD (National Vulnerability Database)
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. The endpoint returns a raw response containing parameters such as Login_PW, which is Base64-encoded. An attacker can decode this value to obtain valid administrative credentials and authenticate to the device.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键功能的认证机制缺失
Source: NVD (National Vulnerability Database)
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
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Nexxt Solutions · 2026-03-23 · 6 CVEs total
| CVE-2026-31849 | Missing CSRF Protection on Administrative Endpoints in Nexxt Nebula 300+ | |
| CVE-2026-31847 | Hidden Functionality Enables Remote Telnet Activation via /goform/setSysTools in Nexxt Neb | |
| CVE-2026-31850 | Plaintext Storage of Credentials in Configuration Backup in Nexxt Nebula 300+ | |
| CVE-2026-31848 | Reversible ecos_pw Cookie Allows Authentication Bypass in Nexxt Nebula 300+ | |
| CVE-2026-31851 | Lack of Rate Limiting Enables Brute-Force Attacks in Nexxt Nebula 300+ |
IV. Related Vulnerabilities
Same vendor: Nexxt Solutions
- CVE-2026-31851
Lack of Rate Limiting Enables Brute-Force Attacks in Nexxt N - CVE-2026-31850
Plaintext Storage of Credentials in Configuration Backup in - CVE-2026-31849
Missing CSRF Protection on Administrative Endpoints in Nexxt - CVE-2026-31848
Reversible ecos_pw Cookie Allows Authentication Bypass in Ne - CVE-2026-31847
Hidden Functionality Enables Remote Telnet Activation via /g
Same weakness: CWE-306
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V. Comments for CVE-2026-31846
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