CVE-2020-21835

Name: CVE-2020-21835
Creator: NVD / NIST
Published: 2021-05-17T21:15:07.433+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.86%

Last modified Jun 17, 2026

CVE-2020-21835 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A null pointer deference issue exists in GNU LibreDWG 0.10 via read_2004_compressed_section ../../src/decode.c:2337.. EPSS estimates a 0.86% chance of exploitation in the next 30 days.

Description

A null pointer deference issue exists in GNU LibreDWG 0.10 via read_2004_compressed_section ../../src/decode.c:2337.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

0.86%

54.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Gnu	Libredwg	0.10

References

http://gnu.comNot Applicable
https://github.com/LibreDWG/libredwg/issues/188#issuecomment-574493046Exploit, Issue Tracking, Patch, Third Party Advisory
http://gnu.comNot Applicable
https://github.com/LibreDWG/libredwg/issues/188#issuecomment-574493046Exploit, Issue Tracking, Patch, Third Party Advisory

Timeline

Published: May 17, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-21835?

A null pointer deference issue exists in GNU LibreDWG 0.10 via read_2004_compressed_section ../../src/decode.c:2337.

How severe is CVE-2020-21835?

CVE-2020-21835 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.86% probability of exploitation in the next 30 days.

How do I fix CVE-2020-21835?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-21835?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST