CVE-2026-9504 Details
Description
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.
A heap-based buffer overflow vulnerability has been identified in GNU LibreDWG versions through 0.14. The issue arises in the Dwggrep Utility, specifically within the 'bit_convert_TU' function of 'programs/dwggrep.c'. This vulnerability allows for an out-of-bounds read, which could be exploited locally. The problem has been publicly disclosed, and a patch is available.
Users are advised to update to the patched version of GNU LibreDWG. The patch is included in the commit 'be996bf2178a40e98720f18c2414815d244413db'.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 25, 2026CISA-ADP
Assessed May 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/LibreDWG/libredwg/issues/1246 | CISA-ADP | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_overflow_bit_convert_TU.dwg | [email protected] | Exploit |
| https://github.com/LibreDWG/libredwg/commit/be996bf2178a40e98720f18c2414815d244413db | [email protected] | Source CodeVendor |
| https://github.com/LibreDWG/libredwg/issues/1246 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://vuldb.com/submit/814261 | [email protected] | Permission Required |
| https://vuldb.com/vuln/365486 | [email protected] | AdvisoryPermission RequiredRemedy |
| https://vuldb.com/vuln/365486/cti | [email protected] | AdvisoryPermission Required |
| https://www.gnu.org/ | [email protected] | Vendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| GNU LibreDWG | <= 0.14 |
CPE
Remediation
| |
| GNU LibreDWG Dwggrep Utility | All versions |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 26, 2026 | CVE Modified | CISA-ADP |
| May 25, 2026 | New CVE Received | [email protected] |