CVE-2021-36080: GNU Libredwg

High severity, CVSS 8.8. EPSS: 1.3% chance of exploitation in the next 30 days.

GNU LibreDWG 0.12.3.4163 through 0.12.3.4191 has a double-free in bit_chain_free (called from dwg_encode_MTEXT and dwg_encode_add_object).

Affected products

• GNU Libredwg: from 0.12.3.4163, up to and including 0.12.3.4191

Published 2021-07-01. Last modified 2026-06-17.