CVE-2026-9501

GNU LibreDWG Dwgread Utility decode.c decompress_R2004_section assertion

State: Published
Severity: 4.8 Medium
Published: May 25, 2026
Updated: May 28, 2026
Reserved: May 25, 2026

Description

A vulnerability was determined in GNU LibreDWG up to 0.14. The impacted element is the function decompress_R2004_section of the file src/decode.c of the component Dwgread Utility. Executing a manipulation can lead to reachable assertion. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. This patch is called e501cb9926c1e9a07a0d1cc997f3e69e9be801c9. A patch should be applied to remediate this issue.

Scores

CVSS	Score	Vector	Source
4.0	4.8 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	3.3 Low	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C	VulDB
3.0	3.3 Low	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C	VulDB
2.0	1.7 Low	AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C	VulDB

Weaknesses

CWE-617 Reachable Assertion

Affected Products

Product	Versions
LibreDWGGNU	0.1Affected 0.2Affected 0.3Affected 0.4Affected 0.5Affected 0.6Affected 0.7Affected 0.8Affected 0.9Affected 0.10Affected 0.11Affected 0.12Affected 0.13Affected 0.14Affected

References

VDB-365483 | GNU LibreDWG Dwgread Utility decode.c decompress_R2004_section assertionvdb-entrytechnical-description
VDB-365483 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #814250 | LibreDWG Project LibreDWG <= 0.14, main branch up to commit 6d6a339 (released 2026-04-10) Reachable Assertion (CWE-617)third-party-advisory
https://github.com/LibreDWG/libredwg/issues/1242issue-tracking
https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_assert_fail_decompress_R2004_section.dwgexploit
https://github.com/LibreDWG/libredwg/commit/e501cb9926c1e9a07a0d1cc997f3e69e9be801c9patch
https://www.gnu.org/product

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