CVE-2025-10995 Open Babel zipstreamimpl.h underflow memory corruption

What is CVE-2025-10995?

CVE-2025-10995 is a medium-severity memory corruption vulnerability in Open Babel, published on 26 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A security vulnerability has been detected in Open Babel up to 3.1.1. This vulnerability affects the function zlib_stream::basic_unzip_streambuf::underflow in the library /src/zipstreamimpl.h. Such manipulation leads to memory corruption. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used.

Weakness: CWE-119

Which versions are affected by CVE-2025-10995?

3 open source packages ship an affected version, including openbabel. It affects 1 product.

Products include Openbabel Open Babel.

How do I fix CVE-2025-10995?

Upgrade openbabel to 3.2.0 or later.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2025-10995 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-10995 exists.

Other vulnerabilities in Open Babel

• CVE-2022-41793 Open Babel has out-of-bounds write in CSR PadString (title field) Critical 9.8
• CVE-2022-42885 Open Babel has uninitialized pointer dereference in GRO residue parser Critical 9.8
• CVE-2022-43467 Open Babel has out-of-bounds write in PQS coord_file parser Critical 9.8
• CVE-2022-44451 Open Babel has uninitialized pointer dereference in MSI atom parser Critical 9.8
• CVE-2022-46280 Open Babel has uninitialized pointer dereference in PQS pFormat Critical 9.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2025-10995, GHSA-8j3x-m868-cpw8, PYSEC-2026-2776, UBUNTU-CVE-2025-10995.