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Vulnerability record · CVE-2021-22669 · published 26 April 2021

CVE-2021-22669: Advantech webaccess\/scada incorrect permission assignment vulnerability

Advantech · Webaccess\/Scada

Incorrect permissions are set to default on the ‘Project Management’ page of WebAccess/SCADA portal of WebAccess/SCADA Versions 9.0.1 and prior, which may allow a low-privileged user to update an administrator’s password and login as an administrator to escalate privileges on the system.

8.8 CVSS 3.1 High EPSS 1.2% · top 33.8% CWE-732 · Incorrect permission assignment
8.8CVSS 3.1 base score, v2 9.0
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Incorrect permissions are set to default on the ‘Project Management’ page of WebAccess/SCADA portal of WebAccess/SCADA Versions 9.0.1 and prior, which may allow a low-privileged user to update an administrator’s password and login as an administrator to escalate privileges on the system.

CVSS:3.1/AV:N/AC:L/PR:L/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://us-cert.cisa.gov/ics/advisories/icsa-21-103-02 Third Party AdvisoryUS Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-02 Third Party AdvisoryUS Government Resource

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Related vulnerabilities

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

9.8CVE-2023-1437Advantech webaccess\/scada memory buffer overflow vulnerabilityAll versions prior to 9.1.4 of Advantech WebAccess/SCADA are vulnerable to use of untrusted pointers. The RPC arguments the client sent could contain…EPSS 2.8%9.8CVE-2023-32540Advantech webaccess\/scada code injection vulnerabilityIn Advantech WebAccss/SCADA v9.1.3 and prior, there is an arbitrary file overwrite vulnerability, which could allow an attacker to overwrite any file…EPSS 0.90%9.8CVE-2023-32628Advantech webaccess\/scada unrestricted file upload vulnerabilityIn Advantech WebAccss/SCADA v9.1.3 and prior, there is an arbitrary file upload vulnerability that could allow an attacker to modify the file extensi…EPSS 0.71%9.8CVE-2021-32943Advantech webaccess\/scada stack-based buffer overflow vulnerabilityThe affected product is vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute arbitrary code on the WebAccess/…EPSS 1.9%9.8CVE-2019-6519Advantech webaccess\/scada improper authentication vulnerabilityWebAccess/SCADA, Version 8.3. An improper authentication vulnerability exists that could allow a possible authentication bypass allowing an attacker …EPSS 2.8%9.8CVE-2019-6523Advantech webaccess\/scada sql injection vulnerabilityWebAccess/SCADA, Version 8.3. The software does not properly sanitize its inputs for SQL commands.EPSS 2.0%8.8CVE-2020-25161Advantech webaccess\/scada vulnerabilityThe WADashboard component of WebAccess/SCADA Versions 9.0 and prior may allow an attacker to control or influence a path used in an operation on the …EPSS 1.6%8.8CVE-2020-13551Advantech webaccess\/scada incorrect default permissions vulnerabilityAn exploitable local privilege elevation vulnerability exists in the file system permissions of Advantech WebAccess/SCADA 9.0.1 installation. In priv…EPSS 0.49%

Source: NIST National Vulnerability Database (record CVE-2021-22669), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.