An integer overflow flaw exists in OpenModSim versions 1.11.0 and earlier. The overflow is triggered when the software performs arithmetic on integers that exceed the bounds of the data type, causing the program to crash. The impact is a loss of service continuity for users running the simulation. No exploitation results in code execution or data theft are documented in the available information.

The affected product is OpenModSim, specifically versions 1.11.0 or below. No vendor name is provided, indicating the product may be maintained in a publicly hosted repository or as an open‑source library.

The EPSS score is < 1%, and the vulnerability is not listed in the CISA KEV catalog, implying no confirmed exploitation incidents are known. The CVSS score of 7.5 indicates a moderate to high probability of denial of service. Based on the description, the attack vector is inferred to be related to control of the input data that causes the overflow, but the exact vector is not stated. The risk level can be considered moderate to high, as a denial of service could interrupt critical simulation processes while the vulnerability remains unexploited publicly.