CVE-2023-4834

In Red Lion Europe mbCONNECT24 and mymbCONNECT24 and Helmholz myREX24 and myREX24.virtual up to and including 2.14.2 an improperly implemented access validation allows an authenticated, low privileged attacker to gain read access to limited, non-critical device information in his account he should not have access to.

Published: 2023-10-16 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-4834 is rated Low Risk (26/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.33%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-4834

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.11% 0.33% +0.22%
2 2025-03-17 0.04% 0.11% +0.07%
3 2023-10-17 — 0.04% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-4834

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 1.4 [email protected]

Weakness enumeration for CVE-2023-4834

Affected software / configurations for CVE-2023-4834

Vendor Product Version Raw CPE
helmholz myrex24 <= 2.14.2 cpe:2.3:a:helmholz:myrex24:*:*:*:*:*:*:*:*
helmholz myrex24.virtual <= 2.14.2 cpe:2.3:a:helmholz:myrex24.virtual:*:*:*:*:*:*:*:*
mbconnectline mbconnect24 <= 2.14.2 cpe:2.3:a:mbconnectline:mbconnect24:*:*:*:*:*:*:*:*
mbconnectline mymbconnect24 <= 2.14.2 cpe:2.3:a:mbconnectline:mymbconnect24:*:*:*:*:*:*:*:*

References for CVE-2023-4834

cvelogic Threat Intelligence