CVE-2025-10659Network attack vector

Unauthenticated code execution via bypassed regular-expression validation

Published Sep 30, 2025 · Updated Sep 30, 2025

OS command injection in MegaSys Telenium Online Web Application 8.4.21 and earlier allows remote attackers to execute code via HTTP requests. A public PHP endpoint ends a regular-expression validation check insecurely, then passes unsanitized input to an operating-system command invocation without safe argument handling. No authentication or user interaction is required, and injected commands run with the web application service account's privileges.

CVSS severity9.3
Critical
EPSS probability1.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in MegaSys Telenium Online Web Application 8.4.21 and earlier allows remote attackers to execute code via HTTP requests. A public PHP endpoint ends a regular-expression validation check insecurely, then passes unsanitized input to an operating-system command invocation without safe argument handling. No authentication or user interaction is required, and injected commands run with the web application service account's privileges.

The record

CVE
CVE-2025-10659
Published
Sep 30, 2025
Updated
Sep 30, 2025
Vendor
MegaSys Computer Technologies
Product
Telenium Online Web Application
Classifications
CWE-78, T1190, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <=8.4.21

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MegaSys Computer Technologies · Telenium Online Web Applicationversion=0 <=8.4.21

Published CVSS scores

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

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')
T1190Exploit Public-Facing Application
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

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Your stack

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