How severe is CVE-2023-4834?

CVE-2023-4834 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2023-4834 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4834?

CVE-2023-4834 primarily affects Helmholz Myrex24. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-4834?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-4834 published?

CVE-2023-4834 was published on 2023-10-16 and last updated on 2026-06-17.

CVE-2023-4834

CVE-2023-4834 is a medium-severity vulnerability in Helmholz Myrex24 with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-269.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Helmholz Myrex24
Published: 2023-10-16
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2023-4834?: CVE-2023-4834 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2023-4834 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4834?: CVE-2023-4834 primarily affects Helmholz Myrex24. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-4834?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4834 published?: CVE-2023-4834 was published on 2023-10-16 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:helmholz:myrex24:*:*:*:*:*:*:*:*
cpe:2.3:a:helmholz:myrex24.virtual:*:*:*:*:*:*:*:*
cpe:2.3:a:mbconnectline:mbconnect24:*:*:*:*:*:*:*:*
cpe:2.3:a:mbconnectline:mymbconnect24:*:*:*:*:*:*:*:*

More vulnerabilities in Helmholz Myrex24

CVE-2020-35558 — High (CVSS 7.5): An issue was discovered in MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual through…
CVE-2020-12527 — Medium (CVSS 6.5): An issue was discovered in MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all…
CVE-2020-35557 — Medium (CVSS 6.5): An issue in MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through…
CVE-2022-22520 — Medium (CVSS 5.3): A remote, unauthenticated attacker can enumerate valid users by sending specific requests to the webservice of MB…
CVE-2020-35570 — Medium (CVSS 5.3): An issue was discovered in MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual through…
CVE-2020-35566 — Medium (CVSS 5.3): An issue was discovered in MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all…

All CVEs affecting Helmholz Myrex24 →

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