Unauthenticated Credential Disclosure via /goform/ate in Nexxt Nebula 300+
Priority LOW 31CWE-306Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00262 18th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Nexxt Solutions | Nebula 300+ / Tenda F3 V2.0 Firmware | up to 12.01.01.37 | — | No fix listed | CNA |
- Nebula 300+ / Tenda F3 V2.0 Firmware VendorNexxt Solutions Affected up to 12.01.01.37 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-31846
- 2026-10-03 Alias added: GHSA-gf7h-gjp8-r79h
References
More Nexxt Solutions vulnerabilities
- TI-2022-21691 The web service on Nexxt Amp300 ARN02304U8 42.103.1.5095 and 80.103.2.5045 devices allows… CVSS 3.1HIGH 8.8
- TI-2022-22757 Nexxt Nebula 1200-AC 15.03.06.60 allows authentication bypass and command execution by… CVSS 3.1CRITICAL 9.8
- TI-2026-24401 Reversible ecos_pw Cookie Allows Authentication Bypass in Nexxt Nebula 300+ CVSS 4.0HIGH 8.7
- TI-2026-24400 Hidden Functionality Enables Remote Telnet Activation via /goform/setSysTools in Nexxt Nebula 300+ CVSS 4.0HIGH 8.5
- TI-2026-24404 Nexxt Nebula 300+ - Lack of Rate Limiting Enables Brute-Force Attacks CVSS 4.0HIGH 7.7
- TI-2026-24402 Missing CSRF Protection on Administrative Endpoints in Nexxt Nebula 300+ CVSS 4.0HIGH 7.2
Sources
- CVE-2026-31846 · CVE Program
- CVE-2026-31846 · NVD
- FIRST EPSS
- GHSA-gf7h-gjp8-r79h · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences