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**Name of the Vulnerable Software and Affected Versions** Live2D Cubism Editor version 4.2.03 **Description** The issue allows for an out-of-bounds write via a crafted Section Offset Table or Count Info Table in an MOC3 file. This can be exploited in Cubism Core within the Live2D Cubism Editor. **Recommendations** For version 4.2.03, consider restricting the processing of MOC3 files until a patch is available. As a temporary workaround, avoid using crafted Section Offset Tables or Count Info Tables in MOC3 files to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.