🛡️ CVE-2026-31849 — nebula300plus-firmware

🟡 CVSS 6.5 — Medium ✅ No Known Exploit CWE-352 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement CSRF protections on state-changing endpoints such as /goform/setSysTools and other administrative interfaces. As a result, an attacker can craft malicious web requests that are executed in the context of an authenticated administrator’s browser, leading to unauthorized configuration changes, including enabling services or modifying system settings.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity high, availability none.

Weakness class

CVE-2026-31849 is classified as CWE-352: Cross-Site Request Forgery (CSRF). A state-changing request is accepted without proof it was intended, so another site can trigger it using the victim's session.

Affected software

CVE-2026-31849 is recorded against 1 package.

  • nebula300plus-firmware (fixed in 12.01.01.37)

Timeline and source

Published on 23 March 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

nexxt-connectivity-frontend.s3.amazonaws.com
www.nexxtsolutions.com

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CWE CWE-352
Public Exploit ✅ No
Source NVD
Published 2026-03-23
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
nebula300plus-firmware — 12.01.01.37

Similar Threats

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