CVE-2021-42586

Name: CVE-2021-42586
Creator: NVD / NIST
Published: 2022-05-23T11:16:10.6+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.96%

Last modified Jun 17, 2026

CVE-2021-42586 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A heap buffer overflow was discovered in copy_bytes in decode_r2007.c in dwgread before 0.12.4 via a crafted dwg file.. EPSS estimates a 0.96% chance of exploitation in the next 30 days.

Description

A heap buffer overflow was discovered in copy_bytes in decode_r2007.c in dwgread before 0.12.4 via a crafted dwg file.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.96%

57.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Gnu	Libredwg	< 0.12.4

References

https://github.com/LibreDWG/libredwg/issues/350Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/LibreDWG/libredwg/issues/350Exploit, Issue Tracking, Patch, Third Party Advisory

Timeline

Published: May 23, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42586?

A heap buffer overflow was discovered in copy_bytes in decode_r2007.c in dwgread before 0.12.4 via a crafted dwg file.

How severe is CVE-2021-42586?

CVE-2021-42586 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.96% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42586?

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-2021-42586?

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

Scan your code now

Source: NVD / NIST