CVE-2020-12006Network attack vector

Administrator code execution via unvalidated IOCTL inputs

Published May 8, 2020 · Updated Aug 4, 2024

Path traversal and command injection in Advantech WebAccess/SCADA 8.4.4 and earlier and 9.0.0 allow remote attackers to execute code. DATACORE.exe IOCTL 0x0000791e uses an unvalidated path in file operations, while ViewSrv.dll and DrawSrv.dll IOCTL 0x00002711 pass unvalidated strings to system calls. Network access requires no authentication, and successful exploitation runs code with Administrator privileges and can overwrite files outside the application's control.

CVSS severity8.8
High
EPSS probability3.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal and command injection in Advantech WebAccess/SCADA 8.4.4 and earlier and 9.0.0 allow remote attackers to execute code. DATACORE.exe IOCTL 0x0000791e uses an unvalidated path in file operations, while ViewSrv.dll and DrawSrv.dll IOCTL 0x00002711 pass unvalidated strings to system calls. Network access requires no authentication, and successful exploitation runs code with Administrator privileges and can overwrite files outside the application's control.

The record

CVE
CVE-2020-12006
Published
May 8, 2020
Updated
Aug 4, 2024
Vendor
Advantech
Product
WebAccess/SCADA
Classifications
CWE-22, CWE-23, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 8, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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=WebAccess Node Version 8.4.4 and prior, WebAccess Node Version 9.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Advantech · WebAccess/SCADAversion=WebAccess Node Version 8.4.4 and prior, WebAccess Node Version 9.0.0

Published CVSS scores

9.8Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
8.8CISACVSS:3.0/AV:N/AC:L/PR:N/UI:R/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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-23Relative Path Traversal
T1190Exploit Public-Facing Application

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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