What is the CVSS score of CVE-2021-31804?

CVE-2021-31804 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.8%.

Is there a public PoC exploit available for CVE-2021-31804?

Yes, a public proof-of-concept exploit is available for CVE-2021-31804. Prioritise patching immediately. EPSS: 0.8%.

Leocad CVE-2021-31804

MEDIUM

Use After Free (CWE-416)

2021-04-26 cve@mitre.org

Use After Free Memory Corruption Information Disclosure Leocad

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Apr 26, 2021 - 08:15 nvd

MEDIUM 5.5

DescriptionNVD

LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document.

AnalysisAI

LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document. Affected products include: Leocad. Version information: before 21.03.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.