CVE-2026-31846
Unauthenticated Credential Disclosure via /goform/ate in Nexxt Nebula 300+
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.
INFO
Published Date :
March 23, 2026, 12:16 p.m.
Last Modified :
March 26, 2026, 11:16 a.m.
Remotely Exploit :
No
Source :
309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Affected Products
The following products are affected by CVE-2026-31846
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c | |||||
| CVSS 3.1 | MEDIUM | 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c | ||||
| CVSS 4.0 | HIGH | 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c | ||||
| CVSS 4.0 | HIGH | 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c |
Solution
- Update the device firmware to the latest available version.
- Restrict network access to the device.
- Change default administrator credentials immediately.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-31846.
| URL | Resource |
|---|---|
| https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip | |
| https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-31846 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-31846
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-31846 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-31846 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Mar. 26, 2026
Action Type Old Value New Value Changed 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. -
New CVE Received by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Mar. 23, 2026
Action Type Old Value New Value 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. Added CVSS V4.0 AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CVSS V2 (AV:A/AC:L/Au:N/C:C/I:N/A:N) Added CWE CWE-306 Added Reference https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip Added Reference https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/