How severe is CVE-2021-26616?

CVE-2021-26616 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-26616 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26616?

CVE-2021-26616 affects Secuwiz Secuwayssl U. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26616?

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-2021-26616 published?

CVE-2021-26616 was published on 2022-02-09 and last updated on 2026-06-17.

CVE-2021-26616

CVE-2021-26616 is a high-severity vulnerability in Secuwiz Secuwayssl U with a CVSS 3.x base score of 7.8. 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-78.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Secuwiz Secuwayssl U
Published: 2022-02-09
Last modified: 2026-06-17

Description

An OS command injection was found in SecuwaySSL, when special characters injection on execute command with runCommand arguments.

Frequently asked questions

What is CVE-2021-26616?: An OS command injection was found in SecuwaySSL, when special characters injection on execute command with runCommand arguments.
How severe is CVE-2021-26616?: CVE-2021-26616 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-26616 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26616?: CVE-2021-26616 affects Secuwiz Secuwayssl U. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26616?: 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-2021-26616 published?: CVE-2021-26616 was published on 2022-02-09 and last updated on 2026-06-17.

References

https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36438

Affected products (1)

cpe:2.3:a:secuwiz:secuwayssl_u:*:*:*:*:*:macos:*:*

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