# CVE-2026-40820: Authenticated SQLi in getVpnData function

Status: published. Published: 2026-11-12. Updated: 2026-11-12.

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

## Remediation

No remediation reported in collected sources

## Affected products and versions

- MB connect line / mbCONNECT24: ≥ 1.0.0; ≤ 2.20.0 (affected, semver). Source: CNA: CERTVDE
- MB connect line / mymbCONNECT24: ≥ 1.0.0; ≤ 2.20.0 (affected, semver). Source: CNA: CERTVDE
- MB connect line / mbCONNECT24: 2.20.0 (affected). Source: CNA: CERTVDE
- MB connect line / mymbCONNECT24: 2.20.0 (affected). Source: CNA: CERTVDE
- Helmholz / myREX24V2: ≥ 1.0.0; ≤ 2.20.0 (affected, semver). Source: CNA: CERTVDE
- Helmholz / myREX24V2.virtual: ≥ 1.0.0; ≤ 2.20.0 (affected, semver). Source: CNA: CERTVDE
- Helmholz / myREX24V2: 2.20.0 (affected). Source: CNA: CERTVDE
- Helmholz / myREX24V2.virtual: 2.20.0 (affected). Source: CNA: CERTVDE

## Severity and prioritization

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: CERTVDE

- CVSS 3.1: 4.9 (medium); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N; source: CNA: CERTVDE

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-89

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.certvde.com/en/advisories/VDE-2026-044/ (CNA: CERTVDE)

- https://www.certvde.com/en/advisories/VDE-2026-058/ (CNA: CERTVDE)

## Provenance

- CNA: CERTVDE: https://www.cve.org/CVERecord?id=CVE-2026-40820; retrieved 2026-11-12; source updated 2026-11-12

Revision: 4b94c3db7698ee1a2f625862f91e3ff5ee175ea1ca63d65454e50987e60f7c4b

Canonical: https://y2.dev/cve/CVE-2026-40820

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