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Vulnerability record · CVE-2020-12006 · published 8 May 2020

CVE-2020-12006: Advantech webaccess relative path traversal vulnerability

Advantech · Webaccess

Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple relative path traversal vulnerabilities exist that may allow a low privilege user to overwrite files outside the application’s control.

9.8 CVSS 3.1 Critical EPSS 3.7% · top 10.7% CWE-23 · Relative path traversalCWE-22 · Path traversal
9.8CVSS 3.1 base score, v2 7.5
3.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple relative path traversal vulnerabilities exist that may allow a low privilege user to overwrite files outside the application’s control.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.us-cert.gov/ics/advisories/icsa-20-128-01 Third Party AdvisoryUS Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-20-589/ Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-595/ Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-605/ Third Party AdvisoryVDB Entry
https://www.us-cert.gov/ics/advisories/icsa-20-128-01 Third Party AdvisoryUS Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-20-589/ Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-595/ Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-605/ Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2014-9208Advantech webaccess memory buffer overflow vulnerabilityMultiple stack-based buffer overflows in unspecified DLL files in Advantech WebAccess before 8.0.1 allow remote attackers to execute arbitrary code v…EPSS 9.3%9.8CVE-2021-33023Advantech webaccess heap-based buffer overflow vulnerabilityAdvantech WebAccess versions 9.02 and prior are vulnerable to a heap-based buffer overflow, which may allow an attacker to remotely execute code.EPSS 2.3%9.8CVE-2021-38389Advantech webaccess stack-based buffer overflow vulnerabilityAdvantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code.EPSS 10%9.8CVE-2021-38408Advantech webaccess stack-based buffer overflow vulnerabilityA stack-based buffer overflow vulnerability in Advantech WebAccess Versions 9.02 and prior caused by a lack of proper validation of the length of use…EPSS 12%9.8CVE-2020-12019Advantech webaccess stack-based buffer overflow vulnerabilityWebAccess Node Version 8.4.4 and prior is vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute arbitrary code.EPSS 2.2%9.8CVE-2020-10638Advantech webaccess heap-based buffer overflow vulnerabilityAdvantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple heap-based buffer overflow vulnerabilities exist caused by a lack of prope…EPSS 7.1%9.8CVE-2020-12002Advantech webaccess stack-based buffer overflow vulnerabilityAdvantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple stack-based buffer overflow vulnerabilities exist caused by a lack of prop…EPSS 9.1%9.8CVE-2020-12022Advantech webaccess vulnerabilityAdvantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. An improper validation vulnerability exists that could allow an attacker to inject …EPSS 1.7%

Source: NIST National Vulnerability Database (record CVE-2020-12006), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.