CVE-2026-31851 | Nexxt Solutions Nebula 300+ up to 12.01.01.37 Authentication Interface excessive authentication

VDB-352511 · CVE-2026-31851 · GCVE-0-2026-31851 NEXXT SOLUTIONS NEBULA 300+ UP TO 12.01.01.37 AUTHENTICATION INTERFACE EXCESSIVE AUTHENTICATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.7 $0-$5k 3.27+ Summaryinfo A vulnerability was found in Nexxt Solutions Nebula 300+ up to 12.01.01.37. It has been classified as problematic. Impacted is an unknown function of the component Authentication Interface. The manipulation leads to excessive authentication. This vulnerability is documented as CVE-2026-31851. The attack can be initiated remotely. There is not any exploit available. Detailsinfo A vulnerability was found in Nexxt Solutions Nebula 300+ up to 12.01.01.37. It has been rated as problematic. This issue affects an unknown code block of the component Authentication Interface. The manipulation with an unknown input leads to a excessive authentication vulnerability. Using CWE to declare the problem leads to CWE-307. The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks. Impacted is confidentiality. The summary by CVE is: Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout on the authentication interface. The weakness was released by Angel Barre. It is possible to read the advisory at nexxtsolutions.com. The identification of this vulnerability is CVE-2026-31851 since 03/09/2026. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1110.001 according to MITRE ATT&CK. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor Nexxt Solutions Name Nebula 300+ Version 12.01.01.0 12.01.01.1 12.01.01.2 12.01.01.3 12.01.01.4 12.01.01.5 12.01.01.6 12.01.01.7 12.01.01.8 12.01.01.9 12.01.01.10 12.01.01.11 12.01.01.12 12.01.01.13 12.01.01.14 12.01.01.15 12.01.01.16 12.01.01.17 12.01.01.18 12.01.01.19 12.01.01.20 12.01.01.21 12.01.01.22 12.01.01.23 12.01.01.24 12.01.01.25 12.01.01.26 12.01.01.27 12.01.01.28 12.01.01.29 12.01.01.30 12.01.01.31 12.01.01.32 12.01.01.33 12.01.01.34 12.01.01.35 12.01.01.36 12.01.01.37 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 3.7 VulDB Meta Temp Score: 3.7 VulDB Base Score: 3.7 VulDB Temp Score: 3.7 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Excessive authentication CWE: CWE-307 / CWE-799 / CWE-400 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/09/2026 CVE reserved 03/23/2026 +14 days Advisory disclosed 03/23/2026 +0 days VulDB entry created 03/23/2026 +0 days VulDB entry last update Sourcesinfo Advisory: nexxtsolutions.com Researcher: Angel Barre Status: Not defined CVE: CVE-2026-31851 (🔒) GCVE (CVE): GCVE-0-2026-31851 GCVE (VulDB): GCVE-100-352511 Entryinfo Created: 03/23/2026 14:00 Changes: 03/23/2026 14:00 (66) Complete: 🔍 Cache ID: 99:5DD:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸