---
id: CVE-2020-21839
title: An issue was discovered in GNU LibreDWG 0.10
summary: >-
  An issue was discovered in GNU LibreDWG 0.10. Crafted input will lead to an
  memory leak in dwg_decode_eed ../../src/decode.c:3638.
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-401
vendor: gnu
product: libredwg
affected:
  - libredwg = 0.10
published: '2021-05-17'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-21839'
references:
  - url: 'https://cwe.mitre.org/data/definitions/401.html'
    label: cve@mitre.org
  - url: 'https://github.com/LibreDWG/libredwg/issues/188#issuecomment-574492707'
    label: cve@mitre.org
  - url: 'http://gnu.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cwe.mitre.org/data/definitions/401.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://github.com/LibreDWG/libredwg/issues/188#issuecomment-574492707'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00921
epssPercentile: 0.58648
ingestedAt: '2026-07-05T00:59:26.409Z'
---

## Overview

An issue was discovered in GNU LibreDWG 0.10. Crafted input will lead to an memory leak in dwg_decode_eed ../../src/decode.c:3638.

## Affected

- `libredwg = 0.10`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.