CVE-2021-45844

Improper sanitization in the invocation of ODA File Converter from FreeCAD 0.19 allows an...

7.8 HighFix available

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

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.11%Up 0.5 points since Jan 25, 2022

What each source reports

NVD Score used 7.8

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

Record: CVE-2021-45844
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 7.6 HighAV:N/AC:H/Au:N/C:C/I:C/A:C
Weakness: CWE-78
Updated: 2026-11-02

CVE List No score

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

Record: CVE-2021-45844
Updated: 2026-11-02

EUVDEUVD-2021-32562 No score

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

Record: EUVD-2021-32562
Updated: 2026-11-03

GitHub AdvisoriesGHSA-344m-62pc-2wvw 7.8

Improper sanitization in the invocation of ODA File Converter from FreeCAD 0.19 allows an...

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

Record: GHSA-344m-62pc-2wvw
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

OSV 7.8

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

Record: CVE-2021-45844
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2021-45844 7.8

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

Record: DEBIAN-CVE-2021-45844
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2021-45844 7.8

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

Record: UBUNTU-CVE-2021-45844
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVMGASA-2022-0325 No score

Updated freecad packages fix security vulnerability

Improper sanitization in the invocation of ODA File Converter from FreeCAD 0.19 allows an attacker to inject OS commands via a crafted filename. (CVE-2021-45844)

Record: MGASA-2022-0325
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`freecad` Debian:12	before 0.19.4+dfsg1-1	0.19.4+dfsg1-1
`freecad` Debian:13	before 0.19.4+dfsg1-1	0.19.4+dfsg1-1
`freecad` Debian:14	before 0.19.4+dfsg1-1	0.19.4+dfsg1-1
`freecad` Debian:9	before 0.16+dfsg2-3+deb9u1, plus listed versions 0.16+dfsg2-3	0.16+dfsg2-3+deb9u1
`freecad` Debian:10	before 0.18~pre1+dfsg1-5+deb10u1, plus listed versions 0.18~pre1+dfsg1-5	0.18~pre1+dfsg1-5+deb10u1
`freecad` Debian:11 From an advisory covering 2 CVEs	before 0.19.1+dfsg1-2+deb11u1, plus listed versions 0.19.1+dfsg1-2	0.19.1+dfsg1-2+deb11u1
`freecad` Mageia:8	before 0.18.6-1.3.mga8	0.18.6-1.3.mga8
`freecad` Ubuntu:16.04:LTS	All versions, plus listed versions 0.14.3702+dfsg-40.15.4671+dfsg1-10.15.4671+dfsg1-20.15.4671+dfsg1-30.15.4671+dfsg1-4	None known
`freecad` Ubuntu:18.04:LTS	All versions, plus listed versions 0.16+dfsg2-30.16+dfsg2-3build30.16.6712+dfsg1-10.16.6712+dfsg1-1ubuntu10.16.6712+dfsg1-1ubuntu2	None known
`freecad` Ubuntu:20.04:LTS	All versions, plus listed versions 0.18.3+dfsg1-10.18.3+dfsg1-40.18.4+dfsg1-10.18.4+dfsg1-2~build10.18.4+dfsg1-2 Show 4 moreShow less 0.18.4+dfsg1-2ubuntu80.18.4+dfsg2-1ubuntu10.18.4+dfsg2-1ubuntu20.18.4+dfsg2-1ubuntu4	None known
`freecad` Ubuntu:22.04:LTS	All versions, plus listed versions 0.19.1+dfsg1-20.19.2+dfsg1-30.19.2+dfsg1-3ubuntu1	None known
`freecad` Ubuntu:26.10	All versions, plus listed versions 1.1.1+dfsg-31.1.1+dfsg-3build11.1.3+dfsg-3build1	None known

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-45844 is a high vulnerability (CVSS 7.8) in Freecadweb Freecad, published January 25, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.11%, the 66th percentile. Fixed in freecad 0.19.4+dfsg1-1.

References

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