CVE-2025-8769Network attack vector

Unauthenticated code execution via login Perl injection

Published Dec 24, 2025 · Updated Dec 24, 2025

Improper input validation in MegaSys Telenium Online Web Application 8.3 and earlier allows remote attackers to execute Perl code. The login-page Perl script fails to validate attacker-controlled HTTP request data before interpreting it as executable Perl code. No authentication or user interaction is required, and successful requests run code on the web application server.

CVSS severity9.8
Critical
EPSS probability1.02%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in MegaSys Telenium Online Web Application 8.3 and earlier allows remote attackers to execute Perl code. The login-page Perl script fails to validate attacker-controlled HTTP request data before interpreting it as executable Perl code. No authentication or user interaction is required, and successful requests run code on the web application server.

The record

CVE
CVE-2025-8769
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
MegaSys Computer Technologies
Product
Telenium Online Web Application
Classifications
CWE-20, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 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 <=8.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MegaSys Computer Technologies · Telenium Online Web Applicationversion=0 <=8.3

Published CVSS scores

9.8ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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

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.

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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-20Improper Input Validation
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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