CVE-2023-1779 | Helmholz and MB Connect Line: Account takeover via password reset in multiple products

Exposure of Sensitive Information to an unauthorized actor vulnerability in MB Connect Lines mbCONNECT24, mymbCONNECT24 and Helmholz' myREX24 and myREX24.virtual in versions <=2.13.3 allow an authorized remote attacker with low privileges to view a limited amount of another accounts contact information.

Published: 2023-06-06 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-1779 is rated Low Risk (31.4/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.52%). 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-2023-1779

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 0.16% 0.52% +0.35%
2 2026-06-07 0.05% 0.16% +0.11%
3 2024-12-27 — 0.05% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-1779

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-2023-1779

Affected software / configurations for CVE-2023-1779

Vendor Product Version Raw CPE
mbconnectline mbconnect24 <= 2.13.3 cpe:2.3:a:mbconnectline:mbconnect24:*:*:*:*:*:*:*:*
mbconnectline mymbconnect24 <= 2.13.3 cpe:2.3:a:mbconnectline:mymbconnect24:*:*:*:*:*:*:*:*

References for CVE-2023-1779

URL Tags
https://cert.vde.com/en/advisories/VDE-2023-008/ Third Party Advisory
cvelogic Threat Intelligence