What is CVE-2025-11900?

CVE-2025-11900 is a critical-severity vulnerability in Hgiga Isherlock 4.5, classified under OS Command Injection. CVSS score: 9.8/10. Published 2025-10-17.

How severe is CVE-2025-11900?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Hgiga Isherlock 4.5

CVE-2025-11900

The iSherlock developed by HGiga has an OS Command Injection vulnerability, allowing unauthenticated remote attackers to inject arbitrary OS commands and execute them on the server.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.018 (76.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Hgiga Isherlock 4.5 — versions 0
Hgiga Isherlock 5.5 — versions 0

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

twcert@cert.org.tw (third-party-advisory)
twcert@cert.org.tw (third-party-advisory)

Frequently asked questions

What is CVE-2025-11900?: CVE-2025-11900 is a critical-severity vulnerability in Hgiga Isherlock 4.5, classified under OS Command Injection. CVSS score: 9.8/10. Published 2025-10-17.
How severe is CVE-2025-11900?: Critical severity. CVSS v3 base score is 9.8 out of 10.