How severe is CVE-2023-49956?

CVE-2023-49956 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-2023-49956 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-49956?

CVE-2023-49956 affects Dallmann-consulting Open Charge Point Protocol. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-49956?

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-2023-49956 published?

CVE-2023-49956 was published on 2023-12-07 and last updated on 2026-06-17.

CVE-2023-49956

CVE-2023-49956 is a high-severity vulnerability in Dallmann-consulting Open Charge Point Protocol 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.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Dallmann-consulting Open Charge Point Protocol
Published: 2023-12-07
Last modified: 2026-06-17

Description

An issue was discovered in Dalmann OCPP.Core before 1.3.0 for OCPP (Open Charge Point Protocol) for electric vehicles. A StopTransaction message with any random transactionId terminates active transactions.

Frequently asked questions

What is CVE-2023-49956?: An issue was discovered in Dalmann OCPP.Core before 1.3.0 for OCPP (Open Charge Point Protocol) for electric vehicles. A StopTransaction message with any random transactionId terminates active transactions.
How severe is CVE-2023-49956?: CVE-2023-49956 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-2023-49956 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-49956?: CVE-2023-49956 affects Dallmann-consulting Open Charge Point Protocol. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-49956?: 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-2023-49956 published?: CVE-2023-49956 was published on 2023-12-07 and last updated on 2026-06-17.

References

https://github.com/dallmann-consulting/OCPP.Core/issues/34

Affected products (1)

cpe:2.3:a:dallmann-consulting:open_charge_point_protocol:*:*:*:*:*:*:*:*

More vulnerabilities in Dallmann-consulting Open Charge Point Protocol

CVE-2023-49958 — High (CVSS 7.5): An issue was discovered in Dalmann OCPP.Core through 1.2.0 for OCPP (Open Charge Point Protocol) for electric vehicles.…
CVE-2023-49957 — High (CVSS 7.5): An issue was discovered in Dalmann OCPP.Core before 1.3.0 for OCPP (Open Charge Point Protocol) for electric vehicles.…
CVE-2023-49955 — High (CVSS 7.5): An issue was discovered in Dalmann OCPP.Core before 1.2.0 for OCPP (Open Charge Point Protocol) for electric vehicles.…

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