CVE-2020-21840

HIGH 8.8CVE-2020-21840 · Published 17/05/2021 · updated 09/07/2026

In short

CVE-2020-21840 is a HIGH (CVSS 8.8) vulnerability affecting libredwg (gnu).
Chance of exploitation in the next 30 days (EPSS): 1.1%, higher than 64.9% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
libredwg gnu	`= 0.10`	No fix yet

A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_search_sentinel ../../src/bits.c:1985.

Running one of these products? Scan your site to see whether it exposes a vulnerable version.