CVE-2026-9504 PUBLISHED

A weakness has been identified in GNU LibreDWG up to 0.14. Affected is the function bit_convert_TU of the file programs/dwggrep.c of the component Dwggrep Utility. This manipulation causes out-of-bounds read. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. Patch name: be996bf2178a40e98720f18c2414815d244413db. Applying a patch is the recommended action to fix this issue.

• pwn3rd (VulDB User) reporter

• VDB-365486 | GNU LibreDWG Dwggrep Utility dwggrep.c bit_convert_TU out-of-bounds
• VDB-365486 | CTI Indicators (IOB, IOC, IOA)
• Submit #814261 | LibreDWG Project LibreDWG <= 0.14, main branch up to commit 6d6a339 (2026-04-10) Out-of-bounds Read (CWE-125)
• https://github.com/LibreDWG/libredwg/issues/1246
• https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_overflow_bit_convert_TU.dwg
• https://github.com/LibreDWG/libredwg/commit/be996bf2178a40e98720f18c2414815d244413db
• https://www.gnu.org/

• Out-of-Bounds Read CWE
• Memory Corruption CWE