Severity
Medium
Analysis Summary
CVE-2021-27436
Advantech WebAccess/SCADA is vulnerable to cross-site scripting, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability using a specially-crafted URL to execute script in a victim’s Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.
Impact
Cross-site scripting
Affected Vendors
Advantech
Affected Products
- Advantech WebAccess/SCADA 8.2_20170817
- Advantech WebAccess/SCADA 8.3.2
- Advantech WebAccess/SCADA 8.3
- Advantech WebAccess/SCADA 8.3.5
- Advantech WebAccess/SCADA 8.3.4
- Advantech WebAccess/SCADA 8.4.0
- Advantech WebAccess/SCADA 8.4.1
- Advantech WebAccess/SCADA 9.0
Remediation
Upgrade to the latest version of WebAccess/SCADA (9.0.1 or later).