CVE-2025-11900: HGiga｜iSherlock - OS Command Injection

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-17 · updated 2026-10-18
Weakness: CWE-78

Description

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.

Affected products

HGiga iSherlock 4.5: before 774; before 440 — fixed in 440, 774
HGiga iSherlock 5.5: before 774; before 440 — fixed in 440, 774

How to fix

Upgrade to a fixed version: HGiga iSherlock 4.5 440, 774; HGiga iSherlock 5.5 440, 774. Check the vendor advisory for mitigations.

References

https://www.twcert.org.tw/en/cp-139-10441-00aaf-2.html
https://www.twcert.org.tw/tw/cp-132-10440-dd55d-1.html

Get alerted when CVE-2025-11900 or the next vulnerability affects your stack