CVE-2025-66969

Deferred Deferred - Pending Action

Integer Overflow in OpenModSim Denial of Service

Publication date: 2026-10-16

Last updated on: 2026-10-28

Assigner: MITRE

Description

Integer overflow in OpenModSim (<=1.11.0), leading to denial of service

CVSS Scores

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Meta Information

Published

2026-10-16

Last Modified

2026-10-28

Generated

2026-11-08

AI Q&A

2026-10-17

EPSS Evaluated

2026-11-07

NVD

CVE-2025-66969

EUVD

EUVD-2025-211110

Affected Vendors & Products

Vendor	Product	Version / Range
n/a	n/a	n/a

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-190	The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Attack-Flow Graph

Executive Summary

This vulnerability is an integer overflow in OpenModSim versions up to and including 1.11.0. An integer overflow occurs when a calculation produces a result larger than the maximum value that can be stored in the variable's data type, causing unexpected behavior.

Impact Analysis

The integer overflow can lead to a denial of service. This means an attacker could exploit the flaw to crash the application or system, making it unavailable for legitimate users.

Mitigation Strategies

Update OpenModSim to the latest version (1.11.0 or higher) to address the integer overflow issue. If updating is not possible, consider disabling or removing the software until a patch is available.

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