CVE-2026-31848 | Nexxt Solutions Nebula 300+ up to 12.01.01.37 Cookie ecos_pw risky encryption

VDB-352507 · CVE-2026-31848 · GCVE-0-2026-31848 NEXXT SOLUTIONS NEBULA 300+ UP TO 12.01.01.37 COOKIE ECOS_PW RISKY ENCRYPTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.7 $0-$5k 3.46+ Summaryinfo A vulnerability, which was classified as problematic, has been found in Nexxt Solutions Nebula 300+ up to 12.01.01.37. Affected by this issue is some unknown functionality of the component Cookie Handler. This manipulation of the argument ecos_pw causes risky encryption. This vulnerability is tracked as CVE-2026-31848. The attack is possible to be carried out remotely. No exploit exists. Detailsinfo A vulnerability has been found in Nexxt Solutions Nebula 300+ up to 12.01.01.37 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component Cookie Handler. The manipulation of the argument ecos_pw with an unknown input leads to a risky encryption vulnerability. The CWE definition for the vulnerability is CWE-327. The product uses a broken or risky cryptographic algorithm or protocol. As an impact it is known to affect confidentiality. The summary by CVE is: Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores administrative authentication material in the ecos_pw cookie using a reversible Base64-encoded format with a static suffix. An attacker who obtains or derives this cookie value can forge a valid administrative session and gain unauthorized access to the device. The weakness was disclosed by Angel Barre. It is possible to read the advisory at nexxtsolutions.com. This vulnerability is known as CVE-2026-31848 since 03/09/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1600 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: Risky encryption CWE: CWE-327 / CWE-310 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-2026-31848 (🔒) GCVE (CVE): GCVE-0-2026-31848 GCVE (VulDB): GCVE-100-352507 Entryinfo Created: 03/23/2026 13:58 Changes: 03/23/2026 13:58 (67) Complete: 🔍 Cache ID: 99:9AC:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸