CVE-2021-28236

Name: CVE-2021-28236
Creator: NVD / NIST
Published: 2021-12-02T22:15:08.893+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.20%

Last modified Jun 17, 2026

CVE-2021-28236 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. LibreDWG v0.12.3 was discovered to contain a NULL pointer dereference via out_dxfb.c.. EPSS estimates a 1.20% chance of exploitation in the next 30 days.

Description

LibreDWG v0.12.3 was discovered to contain a NULL pointer dereference via out_dxfb.c.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.20%

64.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Gnu	Libredwg	0.12.3

References

https://github.com/LibreDWG/libredwg/issues/324Exploit, Third Party Advisory
https://github.com/LibreDWG/libredwg/issues/324Exploit, Third Party Advisory

Timeline

Published: Dec 2, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-28236?

LibreDWG v0.12.3 was discovered to contain a NULL pointer dereference via out_dxfb.c.

How severe is CVE-2021-28236?

CVE-2021-28236 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.20% probability of exploitation in the next 30 days.

How do I fix CVE-2021-28236?

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-2021-28236?

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

Scan your code now

Source: NVD / NIST