What is CVE-2021-26616?

CVE-2021-26616 is a high-severity vulnerability in Secuwiz Secuwayssl U, classified under OS Command Injection. CVSS score: 7.8/10. Published 2022-02-09.

How severe is CVE-2021-26616?

High severity. CVSS v3 base score is 7.8 out of 10.

RCE in Secuwiz Secuwayssl U

CVE-2021-26616

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

Vulnerability class: Command Injection (OS Command Injection)

Published 2022-02-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (57.9th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Secuwiz Secuwayssl U
Secuwiz Co., Ltd Secuwayssl U V2.0 Client For macOS — versions 2.0.0.4

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

www.boho.or.kr/krcert/secNoticeView.do (Third Party Advisory)

Frequently asked questions

What is CVE-2021-26616?: CVE-2021-26616 is a high-severity vulnerability in Secuwiz Secuwayssl U, classified under OS Command Injection. CVSS score: 7.8/10. Published 2022-02-09.
How severe is CVE-2021-26616?: High severity. CVSS v3 base score is 7.8 out of 10.