Buffer overflow in GNU Libredwg
CVE-2026-9504
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (4.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 4.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: -0.000
Affected products
- GNU Libredwg — versions 0.1, 0.2, 0.3
Weakness classification (CWE)
References
- vuldb.com/vuln/365486 (technical-description, vdb-entry)
- vuldb.com/vuln/365486/cti (signature, permissions-required)
- vuldb.com/submit/814261 (third-party-advisory)
- github.com/LibreDWG/libredwg/issues/1246 (issue-tracking)
- github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_overflo… (exploit)
- github.com/LibreDWG/libredwg/commit/be996bf2178a40e98720f18c2414815d244413db (patch)
- www.gnu.org/ (product)
Frequently asked questions
- What is CVE-2026-9504?
- CVE-2026-9504 is a low-severity vulnerability in GNU Libredwg, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.3/10. Published 2026-05-25.
- How severe is CVE-2026-9504?
- Low severity. CVSS v3 base score is 3.3 out of 10.