CVE-2025-11900Network attack vector

Unauthenticated command execution via OS command injection

Published Oct 17, 2025 · Updated Oct 17, 2025

OS command injection in HGiga iSherlock 4.5 and 5.5 allows remote attackers to execute arbitrary commands without authentication. Neither TWCERT/CC nor HGiga identifies the vulnerable request parameter or the server-side command construction that fails to neutralize it. Network reachability alone is sufficient; successful injection runs commands on the iSherlock server and can read, alter, or interrupt its data and services.

CVSS severity9.8
Critical
EPSS probability1.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

OS command injection in HGiga iSherlock 4.5 and 5.5 allows remote attackers to execute arbitrary commands without authentication. Neither TWCERT/CC nor HGiga identifies the vulnerable request parameter or the server-side command construction that fails to neutralize it. Network reachability alone is sufficient; successful injection runs commands on the iSherlock server and can read, alter, or interrupt its data and services.

The record

CVE
CVE-2025-11900
Published
Oct 17, 2025
Updated
Oct 17, 2025
Vendor
HGiga
Product
iSherlock
Classifications
CWE-78, CAPEC-88, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <440
  2. Affected versionversion=0 <774

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HGiga · iSherlockversion=0 <440; version=0 <774

Published CVSS scores

9.8TWCERT/CCCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3TWCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC-88OS Command Injection
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo