What is CVE-2021-47745?

CVE-2021-47745 is a high-severity vulnerability in Cypress 200, classified under OS Command Injection. CVSS score: 8.8/10. Published 2025-12-31.

How severe is CVE-2021-47745?

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

RCE in Cypress 200

CVE-2021-47745

Cypress Solutions CTM-200 2.7.1 contains an authenticated command injection vulnerability in the firmware upgrade script that allows remote attackers to execute shell commands. Attackers can exploit the 'fw_url' parameter in the ctm-config-upgrade.sh script to inject and execute arbitrary commands with root privileges.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.012 (64.7th percentile) — read the EPSS interpretation.

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.

Affected products

Cypress 200 — versions 2.7.1

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2021-47745?: CVE-2021-47745 is a high-severity vulnerability in Cypress 200, classified under OS Command Injection. CVSS score: 8.8/10. Published 2025-12-31.
How severe is CVE-2021-47745?: High severity. CVSS v3 base score is 8.8 out of 10.