Is CVE-2021-43359 actively exploited?

No active exploitation of CVE-2021-43359 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-43359 be exploited remotely?

Yes. CVE-2021-43359 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-43359?

CVE-2021-43359 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2021-43359

CWE-732Published: December 1, 2021· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

Sunnet eHRD has broken access control vulnerability, which allows a remote attacker to access account management page after being authenticated as a general user, then perform privilege escalation to execute arbitrary code and control the system or interrupt services.

NVD Source

Technical Analysis

CVE-2021-43359 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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 8.8.