CVE-2026-9500 GNU LibreDWG Dwgread Utility decode.c read_2004_compressed_section heap-based overflow
A heap-based buffer overflow in the Dwgread utility allows local attackers to execute arbitrary code or cause a denial of service via crafted DWG files.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-9500?
CVE-2026-9500 is a medium-severity memory corruption vulnerability in GNU LibreDWG, published on 25 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was found in GNU LibreDWG up to 0.14. The affected element is the function read_2004_compressed_section of the file src/decode.c of the component Dwgread Utility. Performing a manipulation results in heap-based buffer overflow. The attack is only possible with local access. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-9500?
How do I fix CVE-2026-9500?
No fix has been published for CVE-2026-9500 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-9500 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9500 exists.
Sources
Also known as GHSA-hh47-vf3p-8vq5.