A vulnerability in Open Babel up to version 3.1.1 involves a NULL pointer dereference in the function OBAtom::SetFormalCharge within the MOL2 File Handler component. This flaw results in an out-of-bounds read and can be triggered remotely. The advisory is a duplicate and has been withdrawn in favor of another. No patch or fix has been confirmed, and the project has not responded to the issue report. Exploit code is publicly available, but no known exploits in the wild have been reported.