CVE-2026-31846

Unauthenticated Credential Disclosure via /goform/ate in Nexxt Nebula 300+

Published Mar 23, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
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. 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.
Title Nexxt Nebula 300+ - Unauthenticated Credential Disclosure via /goform/ate Unauthenticated Credential Disclosure via /goform/ate in Nexxt Nebula 300+
Type Values Removed Values Added
Title Unauthenticated Credential Disclosure via /goform/ate in Nexxt Nebula 300+ Nexxt Nebula 300+ - Unauthenticated Credential Disclosure via /goform/ate
Type Values Removed Values Added
Description An unauthenticated credential disclosure vulnerability in the /goform/ate endpoint of Nexxt Solutions Nebula 300+ firmware through Nebula300+_v12.01.01.37 allows an adjacent attacker to obtain the administrator password in Base64-encoded form via a crafted HTTP request. The recovered credential can be used to authenticate to the device and facilitates further compromise when combined with other weaknesses present in the firmware. 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.
Title Unauthenticated Credential Disclosure in Nebula 300+ Firmware Unauthenticated Credential Disclosure via /goform/ate in Nexxt Nebula 300+
Type Values Removed Values Added
Title Unauthenticated Credential Disclosure in Nebula 300+ Firmware
Type Values Removed Values Added
First Time appeared Nexxtsolutions
Nexxtsolutions nebula300+
Vendors & Products Nexxtsolutions
Nexxtsolutions nebula300+
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description An unauthenticated credential disclosure vulnerability in the /goform/ate endpoint of Nexxt Solutions Nebula 300+ firmware through Nebula300+_v12.01.01.37 allows an adjacent attacker to obtain the administrator password in Base64-encoded form via a crafted HTTP request. The recovered credential can be used to authenticate to the device and facilitates further compromise when combined with other weaknesses present in the firmware.
Weaknesses CWE-306
References
Metrics cvssV2_0

{'score': 6.1, 'vector': 'AV:A/AC:L/Au:N/C:C/I:N/A:N'}

cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TuranSec
Published
Updated
Aug 10, 2026, 11:43 AM
Reserved
Mar 9, 2026, 6:20 PM
Status
Deferred
Published
Mar 23, 2026, 12:16 PM
Modified
Aug 10, 2026, 12:17 PM