PatchTheCVECVE-2026-31849: Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement CSRF protections on state-
CVE-2026-31849 is a medium-severity flaw (CVSS 6.5) affecting nebula300plus firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.1% (top 98%) |
| CISA exploited list | No |
| Weakness | CWE-352 |
| Published | 2026-03-23 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-31849?
nebula300plus firmware: upgrade to newer than 12.01.01.37. Exact commands for each OS are on this page.
Is CVE-2026-31849 being exploited?
CVE-2026-31849 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-31849 affect?
CVE-2026-31849 affects nebula300plus firmware. Severity is medium (CVSS 6.5). 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 w
How urgent is CVE-2026-31849?
Priority 23/100. No elevated risk signals yet.
Related CVEs
- CVE-2026-31848 CRITICAL 9.8 UPGRADE Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 uses the ecos_pw cookie for authentication, w
- CVE-2026-31847 HIGH 8.8 UPGRADE Hidden functionality in the /goform/setSysTools endpoint in Nexxt Solutions Nebula 300+ firmware through versi
- CVE-2026-31851 CRITICAL 9.8 UPGRADE Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account l
- CVE-2026-31850 MEDIUM 4.9 UPGRADE Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including admin