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**Name of the Vulnerable Software and Affected Versions** pgvector versions prior to 0.8.6 **Description** An integer wraparound occurs during the IVFFlat index build process on 32-bit systems. This issue allows a database user to perform an out-of-bounds write, which could potentially lead to arbitrary code execution. Integer wraparound is a condition where an arithmetic operation results in a value too large for the designated integer type, causing it to wrap around to a minimum or negative value. **Recommendations** Update pgvector to version 0.8.6 or later.