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Vulnerability record · CVE-2026-31849 · published 23 March 2026

CVE-2026-31849: Nexxtsolutions nebula300plus firmware cross-site request forgery vulnerability

NNexxtsolutions · Nebula300plus Firmware

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.

7.2 CVSS 4.0 High EPSS 0.17% · top 93.9% CWE-352 · Cross-site request forgery
7.2CVSS 4.0 base score
0.17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip Product
https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/ Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.7CVE-2026-31848Nexxtsolutions nebula300plus firmware cleartext storage of sensitive data vulnerabilityNexxt Solutions Nebula 300+ firmware through version 12.01.01.37 uses the ecos_pw cookie for authentication, which contains Base64-encoded credential…EPSS 0.46%8.5CVE-2026-31847Nexxtsolutions nebula300plus firmware vulnerabilityHidden functionality in the /goform/setSysTools endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows remote enablement…EPSS 0.68%7.7CVE-2026-31851Nexxtsolutions nebula300plus firmware improper restriction of authentication attempts vulnerabilityNexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout mechanisms on authentication int…EPSS 0.67%6.8CVE-2026-31850Nexxtsolutions nebula300plus firmware vulnerabilityNexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including administrative credentials and WiFi pre-shar…EPSS 0.27%9.4CVE-2025-62593Ray browser-based RCE via insufficient User-Agent guardRay, an AI compute engine, contains a critical remote code execution flaw before version 2.52.0. Its defense against browser-based attacks relies on …KEVEPSS 62%analysed8.1CVE-2008-4128Cisco IOS HTTP Administration CSRF allows arbitrary command executionThe HTTP Administration component in Cisco IOS 12.4 on the 871 Integrated Services Router is vulnerable to multiple cross-site request forgery flaws.…KEVEPSS 34%analysed8.8CVE-2023-2533PaperCut NG/MF CSRF allows admin security setting changes and code executionPaperCut NG and MF contain a cross-site request forgery flaw that, under specific conditions, lets an attacker change security settings or execute ar…KEVEPSS 29%analysed8.0CVE-2014-100005D-Link DIR-600 router CSRF enables admin account creation and remote managementThe D-Link DIR-600 (rev. Bx) with firmware before 2.17b02 is affected by multiple cross-site request forgery flaws in hedwig.cgi, pigwidgeon.cgi and …KEVEPSS 43%analysed

Source: NIST National Vulnerability Database (record CVE-2026-31849), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.