CVE-2021-31804
LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document.
LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document.
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
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document.
- Record
CVE-2021-31804- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:N/A:P - Weakness
- CWE-416
- Updated
- 2026-11-02
CVE List No score
LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document.
- Record
CVE-2021-31804- Updated
- 2026-11-02
EUVDEUVD-2021-18683 No score
LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document.
- Record
EUVD-2021-18683- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-636v-4www-6mj9 No score
LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document.
LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document.
- Record
GHSA-636v-4www-6mj9- Weakness
- CWE-416
- Updated
- 2026-11-02
OSV
LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document.
- Record
CVE-2021-31804- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-31804
LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document.
- Record
DEBIAN-CVE-2021-31804- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-31804
LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document.
- Record
UBUNTU-CVE-2021-31804- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
leocadDebian:12 |
All versions, plus listed versions 21.06-123.03-123.03-223.03-325.09-126.09-1 |
None known |
leocadDebian:13 |
All versions, plus listed versions 23.03-325.09-126.09-1 |
None known |
leocadDebian:14 |
All versions, plus listed versions 23.03-325.09-126.09-1 |
None known |
leocadUbuntu:16.04:LTS |
All versions, plus listed versions 0.81+svn1775-10.81+svn1775-1ubuntu1 |
None known |
leocadUbuntu:18.04:LTS |
All versions, plus listed versions 17.07-117.07-218.01-1 |
None known |
leocadUbuntu:20.04:LTS |
All versions, plus listed versions 19.07.1-119.07.1-1build1 |
None known |
leocadUbuntu:22.04:LTS |
All versions, plus listed versions 19.07.1-1build121.06-1 |
None known |
leocadUbuntu:24.04:LTS |
All versions, plus listed versions 21.06-121.06-1build121.06-1build2 |
None known |
leocadUbuntu:25.10 |
All versions, plus listed versions 21.06-1build223.03-3 |
None known |
leocadUbuntu:26.10 |
All versions, plus listed versions 25.09-1 |
None known |
leocadUbuntu:26.04:LTS |
All versions, plus listed versions 23.03-325.09-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-31804 is a medium vulnerability (CVSS 5.5) in Leocad, published April 26, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.77%, the 55th percentile. No source names a fixed version.