CVE-2026-9605 GNU libredwg Dwgbmp Utility bits.c bit_read_RC heap-based overflow
A heap-based buffer overflow in GNU libredwg's Dwgbmp utility allows remote attackers to execute arbitrary code or cause denial of service via crafted files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-9605?
CVE-2026-9605 is a medium-severity memory corruption vulnerability in GNU libredwg, published on 26 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw has been found in GNU libredwg up to 0.13.4.8160. This issue affects the function bit_read_RC of the file bits.c of the component Dwgbmp Utility. This manipulation causes heap-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: 8f03865f37f5d4ffd616fef802acc980be54d300. Applying a patch is the recommended action to fix this issue.
Which versions are affected by CVE-2026-9605?
How do I fix CVE-2026-9605?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-9605 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9605 exists.
Sources
Also known as GHSA-9fj3-rp2j-9wq6.