A heap-buffer-overflow vulnerability exists in the RDKit library within the function ParseV3000AtomProps, as reported by OSS-Fuzz. The issue involves an out-of-bounds read leading to a crash. This vulnerability affects versions of RDKit starting from commit fbbddc6035d74f12edde15bf1a93fa70a3fe6fd1. No official patch or fix information is provided in the available data.