What is CVE-2021-43359?

CVE-2021-43359 is a high-severity vulnerability in Sun Ehrd, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 8.8/10. Published 2021-12-01.

How severe is CVE-2021-43359?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Sun Ehrd

CVE-2021-43359

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.

Published 2021-12-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.025 (83.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.025 · change: +0.001

Affected products

Sun Ehrd — versions 8, 9
Sunnet Ehrd — versions 8, 9

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

www.twcert.org.tw/tw/cp-132-5354-0aac0-1.html (Third Party Advisory)

Frequently asked questions

What is CVE-2021-43359?: CVE-2021-43359 is a high-severity vulnerability in Sun Ehrd, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 8.8/10. Published 2021-12-01.
How severe is CVE-2021-43359?: High severity. CVSS v3 base score is 8.8 out of 10.