CVE-2026-9605

GNU libredwg Dwgbmp Utility bits.c bit_read_RC heap-based overflow

State: Published
Severity: 6.9 Medium
Published: May 26, 2026
Updated: May 28, 2026
Reserved: May 26, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	7.3 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C	VulDB
3.0	7.3 High	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C	VulDB
2.0	7.5 High	AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C	VulDB

Weaknesses

CWE-122 Heap-based Buffer Overflow
CWE-119 Memory Corruption

Affected Products

Product	Versions
libredwgGNU	0.13.4.8160Affected

References

VDB-365678 | GNU libredwg Dwgbmp Utility bits.c bit_read_RC heap-based overflowvdb-entrytechnical-description
VDB-365678 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #818197 | LibreDWG libredwg (including the dwgbmp utility) 0.13.4.8160 Buffer Overflowthird-party-advisory
https://github.com/LibreDWG/libredwg/issues/1248issue-tracking
https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_oob_write_read_2004_compressed_section.dwgexploit
https://github.com/LibreDWG/libredwg/commit/8f03865f37f5d4ffd616fef802acc980be54d300patch
https://www.gnu.org/broken-linkproduct

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