What’s Vulnerable › Vulnerabilities

CVE-2026-9503: GNU LibreDWG DWG File decode.c dwg_next_entity null pointer dereference

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-25 · updated 2026-07-23
• Weakness: CWE-404

Description

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.

Affected products

• GNU LibreDWG: 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+8)

References

• https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_oob_write_read_2004_compressed_section.dwg
• https://github.com/LibreDWG/libredwg/commit/8f03865f37f5d4ffd616fef802acc980be54d300
• https://github.com/LibreDWG/libredwg/issues/1245
• https://vuldb.com/submit/814260
• https://vuldb.com/vuln/365485
• https://vuldb.com/vuln/365485/cti
• https://www.gnu.org/

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