CVE-2026-9501: GNU LibreDWG Dwgread Utility decode.c decompress_R2004_section assertion

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% 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-617

Description

A vulnerability was determined in GNU LibreDWG up to 0.14. The impacted element is the function decompress_R2004_section of the file src/decode.c of the component Dwgread Utility. Executing a manipulation can lead to reachable assertion. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. This patch is called e501cb9926c1e9a07a0d1cc997f3e69e9be801c9. A patch should be applied to remediate this issue.

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_assert_fail_decompress_R2004_section.dwg
https://github.com/LibreDWG/libredwg/commit/e501cb9926c1e9a07a0d1cc997f3e69e9be801c9
https://github.com/LibreDWG/libredwg/issues/1242
https://vuldb.com/submit/814250
https://vuldb.com/vuln/365483
https://vuldb.com/vuln/365483/cti
https://www.gnu.org/

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