CVE-2021-39521

PoC —

CVSS 3.1

6.5 medium

EPSS

<1%p57

Published

Sep 20, 2021 (Sep 20, 2021)

Modified

Jun 17, 2026

Description

An issue was discovered in libredwg through v0.10.1.3751. A NULL pointer dereference exists in the function bit_read_BB() located in bits.c. It allows an attacker to cause Denial of Service.

Vendors: gnu
Products: libredwg
Weakness: CWE-476
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.9%)

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