NULL pointer dereference in GNU Libredwg
CVE-2026-9503
A security flaw has been discovered in GNU LibreDWG up to 0.14. This impacts the function dwg_next_entity of the file src/decode.c of the component DWG File Handler. The manipulation results in null pointer dereference. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. The patch is identified as 8f03865f37f5d4ffd616fef802acc980be54d300. Upgrading the affected component is advised.
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:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (4.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.4% 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/365485 (technical-description, vdb-entry)
- vuldb.com/vuln/365485/cti (signature, permissions-required)
- vuldb.com/submit/814260 (third-party-advisory)
- github.com/LibreDWG/libredwg/issues/1245 (issue-tracking)
- github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_oob_wri… (exploit)
- github.com/LibreDWG/libredwg/commit/8f03865f37f5d4ffd616fef802acc980be54d300 (patch)
- www.gnu.org/ (product)
Frequently asked questions
- What is CVE-2026-9503?
- CVE-2026-9503 is a low-severity vulnerability in GNU Libredwg, classified under Improper Resource Shutdown or Release. CVSS score: 3.3/10. Published 2026-05-25.
- How severe is CVE-2026-9503?
- Low severity. CVSS v3 base score is 3.3 out of 10.