Is CVE-2021-43275 actively exploited?

No active exploitation of CVE-2021-43275 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-43275 be exploited remotely?

No. CVE-2021-43275 requires local access to exploit.

What is the CVSS score of CVE-2021-43275?

CVE-2021-43275 has a CVSS score of 7.8 (HIGH).

HOME VULNERABILITIESCVE-2021-43275

HIGH

CVE-2021-43275

CWE-416Published: November 14, 2021· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

A Use After Free vulnerability exists in the DGN file reading procedure in Open Design Alliance Drawings SDK before 2022.8. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process.

NVD Source

Technical Analysis

CVE-2021-43275 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.