CVE-2021-45844

Name: CVE-2021-45844
Creator: NVD / NIST
Published: 2022-01-25T13:15:07.997+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.10%

Last modified Jun 17, 2026

CVE-2021-45844 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Improper sanitization in the invocation of ODA File Converter from FreeCAD 0.19 allows an attacker to inject OS commands via a crafted filename.. EPSS estimates a 1.10% chance of exploitation in the next 30 days.

Description

Improper sanitization in the invocation of ODA File Converter from FreeCAD 0.19 allows an attacker to inject OS commands via a crafted filename.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

1.10%

61.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Freecadweb	Freecad	0.19
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0

References

https://forum.freecadweb.org/viewtopic.php?t=64733Exploit, Issue Tracking, Mitigation, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00004.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/08/msg00008.htmlMailing List, Third Party Advisory
https://tracker.freecad.org/view.php?id=4809Exploit, Issue Tracking, Patch, Vendor Advisory
https://www.debian.org/security/2022/dsa-5229Third Party Advisory
https://forum.freecadweb.org/viewtopic.php?t=64733Exploit, Issue Tracking, Mitigation, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00004.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/08/msg00008.htmlMailing List, Third Party Advisory
https://tracker.freecad.org/view.php?id=4809Exploit, Issue Tracking, Patch, Vendor Advisory
https://www.debian.org/security/2022/dsa-5229Third Party Advisory

Timeline

Published: Jan 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-45844?

Improper sanitization in the invocation of ODA File Converter from FreeCAD 0.19 allows an attacker to inject OS commands via a crafted filename.

How severe is CVE-2021-45844?

CVE-2021-45844 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.10% probability of exploitation in the next 30 days.

How do I fix CVE-2021-45844?

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-2021-45844?

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

Scan your code now

Source: NVD / NIST