What’s Vulnerable › Vulnerabilities

CVE-2023-49955

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-12-07 · updated 2026-06-17

Description

An issue was discovered in Dalmann OCPP.Core before 1.2.0 for OCPP (Open Charge Point Protocol) for electric vehicles. It does not validate the length of the chargePointVendor field in a BootNotification message, potentially leading to server instability and a denial of service when processing excessively large inputs. NOTE: the vendor's perspective is "OCPP.Core is intended for use in a protected environment/network."

Affected products

• Dallmann-Consulting Open Charge Point Protocol: before 1.2.0 — fixed in 1.2.0

How to fix

Upgrade to a fixed version: Dallmann-Consulting Open Charge Point Protocol 1.2.0. Check the vendor advisory for mitigations.

References

• https://github.com/dallmann-consulting/OCPP.Core/issues/32
• https://github.com/dallmann-consulting/OCPP.Core/issues/32

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