CVE-2021-21897

Name: CVE-2021-21897
Creator: NVD / NIST
Published: 2021-09-08T16:15:07.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.79%

Last modified Jun 17, 2026

CVE-2021-21897 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. EPSS estimates a 2.79% chance of exploitation in the next 30 days.

Description

A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

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

2.79%

84.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Ribbonsoft	Dxflib	3.17.0
Fedoraproject	Extra Packages For Enterprise Linux	7.0
Fedoraproject	Extra Packages For Enterprise Linux	8.0
Fedoraproject	Fedora	35
Fedoraproject	Fedora	36
Fedoraproject	Fedora	37
Debian	Debian Linux	9.0

References

Timeline

Published: Sep 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21897?

How severe is CVE-2021-21897?

CVE-2021-21897 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.79% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21897?

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-2021-21897?

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

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Source: NVD / NIST