How severe is CVE-2021-43359?

CVE-2021-43359 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-43359 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43359?

CVE-2021-43359 primarily affects Sun Ehrd. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-43359?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-43359 published?

CVE-2021-43359 was published on 2021-12-01 and last updated on 2026-06-17.

CVE-2021-43359

CVE-2021-43359 is a high-severity vulnerability in Sun Ehrd with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-732.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Sun Ehrd
Published: 2021-12-01
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-43359?: CVE-2021-43359 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-43359 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43359?: CVE-2021-43359 primarily affects Sun Ehrd. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-43359?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-43359 published?: CVE-2021-43359 was published on 2021-12-01 and last updated on 2026-06-17.

References

https://www.twcert.org.tw/tw/cp-132-5354-0aac0-1.html

Affected products (2)

cpe:2.3:a:sun:ehrd:8:*:*:*:*:*:*:*
cpe:2.3:a:sun:ehrd:9:*:*:*:*:*:*:*

More vulnerabilities in Sun Ehrd

CVE-2021-43360 — High (CVSS 8.8): Sunnet eHRD e-mail delivery task schedule’s serialization function has inadequate input object validation and…
CVE-2020-10510 — High (CVSS 8.1): Sunnet eHRD, a human training and development management system, contains a vulnerability of Broken Access Control.…
CVE-2021-43358 — High (CVSS 7.5): Sunnet eHRD has inadequate filtering for special characters in URLs, which allows a remote attacker to perform path…
CVE-2020-10508 — High (CVSS 7.5): Sunnet eHRD, a human training and development management system, improperly stores system files. Attackers can use a…
CVE-2020-10509 — Medium (CVSS 6.1): Sunnet eHRD, a human training and development management system, contains vulnerability of Cross-Site Scripting (XSS),…

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