What is the severity of ZDI-19-621?

The severity of ZDI-19-621 is critical due to the risk of unauthorized information disclosure.

How do I fix ZDI-19-621?

To mitigate ZDI-19-621, apply the latest security patches provided by Advantech for WebAccess.

What type of vulnerability is ZDI-19-621?

ZDI-19-621 is an information disclosure vulnerability affecting Advantech WebAccess Node.

Who is affected by ZDI-19-621?

Organizations using Advantech WebAccess/SCADA are affected by ZDI-19-621.

Is authentication required to exploit ZDI-19-621?

No, authentication is not required to exploit ZDI-19-621.

Vulnerability/
ZDI-19-621

medium

5.3

30/1/2025

ZDI-19-621: Advantech WebAccess Node viewsrv Out-Of-Bounds Read Information Disclosure Vulnerability

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Advantech WebAccess Node. Authentication is not required to exploit this vulnerability. The specific flaw exists within viewsrv.dll, which is accessed through the 0x2722 IOCTL in the webvrpcs process. . The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the Administrator.

Affected Software	Affected Version	How to fix
Advantech WebAccess/SCADA

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Reference Links

Frequently Asked Questions

What is the severity of ZDI-19-621?
The severity of ZDI-19-621 is critical due to the risk of unauthorized information disclosure.
How do I fix ZDI-19-621?
To mitigate ZDI-19-621, apply the latest security patches provided by Advantech for WebAccess.
What type of vulnerability is ZDI-19-621?
ZDI-19-621 is an information disclosure vulnerability affecting Advantech WebAccess Node.
Who is affected by ZDI-19-621?
Organizations using Advantech WebAccess/SCADA are affected by ZDI-19-621.
Is authentication required to exploit ZDI-19-621?
No, authentication is not required to exploit ZDI-19-621.

agent/references
agent/type
agent/softwarecombine
agent/title
agent/severity
agent/description
agent/event
agent/source
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-19-621
alias/ZDI-CAN-8193
alias/CVE-2019-10983
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/advantech
canonical/advantech webaccess/scada

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Frequently Asked Questions

What is the severity of ZDI-19-621?
The severity of ZDI-19-621 is critical due to the risk of unauthorized information disclosure.
How do I fix ZDI-19-621?
To mitigate ZDI-19-621, apply the latest security patches provided by Advantech for WebAccess.
What type of vulnerability is ZDI-19-621?
ZDI-19-621 is an information disclosure vulnerability affecting Advantech WebAccess Node.
Who is affected by ZDI-19-621?
Organizations using Advantech WebAccess/SCADA are affected by ZDI-19-621.
Is authentication required to exploit ZDI-19-621?
No, authentication is not required to exploit ZDI-19-621.