Buffer overflow in GNU Libredwg
CVE-2026-9500
A vulnerability was found in GNU LibreDWG up to 0.14. The affected element is the function read_2004_compressed_section of the file src/decode.c of the component Dwgread Utility. Performing a manipulation results in heap-based buffer overflow. The attack is only possible with local access. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (5.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 5.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
- GNU Libredwg — versions 0.1, 0.2, 0.3
Weakness classification (CWE)
References
- vuldb.com/vuln/365482 (technical-description, vdb-entry)
- vuldb.com/vuln/365482/cti (signature, permissions-required)
- vuldb.com/submit/814248 (third-party-advisory)
- github.com/LibreDWG/libredwg/issues/1241 (issue-tracking)
- github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_oob_wri… (exploit)
- www.gnu.org/ (product)
Frequently asked questions
- What is CVE-2026-9500?
- CVE-2026-9500 is a medium-severity vulnerability in GNU Libredwg, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2026-05-25.
- How severe is CVE-2026-9500?
- Medium severity. CVSS v3 base score is 5.3 out of 10.