How severe is CVE-2023-5188?

CVE-2023-5188 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-5188 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-5188?

CVE-2023-5188 primarily affects Wago Telecontrol Configurator. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-5188?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-5188 published?

CVE-2023-5188 was published on 2023-12-05 and last updated on 2026-06-17.

CVE-2023-5188

CVE-2023-5188 is a high-severity vulnerability in Wago Telecontrol Configurator with a CVSS 3.x base score of 7.5. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Wago Telecontrol Configurator
Published: 2023-12-05
Last modified: 2026-06-17

Description

The MMS Interpreter of WagoAppRTU in versions below 1.4.6.0 which is used by the WAGO Telecontrol Configurator is vulnerable to malformed packets. An remote unauthenticated attacker could send specifically crafted packets that lead to a denial-of-service condition until restart of the affected device.

Frequently asked questions

What is CVE-2023-5188?: The MMS Interpreter of WagoAppRTU in versions below 1.4.6.0 which is used by the WAGO Telecontrol Configurator is vulnerable to malformed packets. An remote unauthenticated attacker could send specifically crafted packets that lead to a denial-of-service condition until restart of the affected device.
How severe is CVE-2023-5188?: CVE-2023-5188 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-5188 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-5188?: CVE-2023-5188 primarily affects Wago Telecontrol Configurator. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-5188?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-5188 published?: CVE-2023-5188 was published on 2023-12-05 and last updated on 2026-06-17.

References

https://cert.vde.com/en/advisories/VDE-2023-044/

Affected products (2)

cpe:2.3:a:wago:telecontrol_configurator:*:*:*:*:*:*:*:*
cpe:2.3:a:wago:wagoapprtu:*:*:*:*:*:*:*:*

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