How to fix or mitigate EUVD-2026-32123?

Within 24 hours: Inventory all instances of mbCONNECT24, myREX24V2, myREX24V2.virtual, and mymbCONNECT24 across your environment; prioritize systems running version 2.20.0 and earlier. Document the sensitivity of data accessible through these portals, particularly backend database contents. Within 7 days: Restrict network access to affected portals to authorized administrative networks only via firewall rules or network segmentation; enable database audit logging on all access patterns to the backend. Within 30 days: Monitor Moxa security advisories for patch release; prepare patching procedures for rapid deployment when version 2.20.1 or later becomes available.

EUVD-2026-32123

Q: What is the CVSS score of EUVD-2026-32123?

EUVD-2026-32123 has a CVSS 4.0 base score of 8.7 (High). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

| CVE-2026-40818 HIGH

SQL Injection (CWE-89)

2026-05-27 info@cert.vde.com

GHSA-cg4r-j4fw-74jx

SQLi

8.7

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

8.7 HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

May 27, 2026 - 20:01 vuln.today

DescriptionCVE.org

An unauthenticated remote attacker can exploit an unauthenticated SQL Injection vulnerability in the _mb24confi_getDevice function due to improper neutralization of special elements in a SQL SELECT command. This can result in a total loss of confidentiality.

AnalysisAI

Unauthenticated SQL injection in the mbCONNECT24 remote-maintenance portal (and the related myREX24V2, myREX24V2.virtual and mymbCONNECT24 products, all versions up to and including 2.20.0) lets a remote attacker read arbitrary data from the backend database by abusing the _mb24confi_getDevice function. The flaw requires no credentials, no user interaction and low attack complexity over the network (CVSS 4.0 score 8.7), but its impact is confined to confidentiality. There is no public exploit identified at time of analysis and the EPSS probability is very low (0.05%, 15th percentile), indicating no observed exploitation activity yet.