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Webaccess Hmi Designer CVE-2021-42706

HIGH
Use After Free (CWE-416)
2021-11-15 ics-cert@hq.dhs.gov
Use After Free RCE Memory Corruption Webaccess Hmi Designer
7.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

1
CVE Published
Nov 15, 2021 - 14:15 nvd
HIGH 7.8

DescriptionNVD

This vulnerability could allow an attacker to disclose information and execute arbitrary code on affected installations of WebAccess/MHI Designer

AnalysisAI

This vulnerability could allow an attacker to disclose information and execute arbitrary code on affected installations of WebAccess/MHI Designer. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. This vulnerability could allow an attacker to disclose information and execute arbitrary code on affected installations of WebAccess/MHI Designer Affected products include: Advantech Webaccess Hmi Designer.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

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Same weakness CWE-416 – Use After Free

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Same technique Use After Free

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CVE-2015-5119 CRITICAL POC
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CVE-2014-0322 HIGH POC
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CVE-2015-0313 CRITICAL POC
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CVE-2021-42706 vulnerability details – vuln.today
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