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)

Published 2025-10-17 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.018 (77.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: -0.000

Affected products

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

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

www.twcert.org.tw/tw/cp-132-10440-dd55d-1.html (third-party-advisory)
www.twcert.org.tw/en/cp-139-10441-00aaf-2.html (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.