What’s Vulnerable › Vulnerabilities

CVE-2021-27436

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-18 · updated 2026-06-17
• Weakness: CWE-79

Description

WebAccess/SCADA Versions 9.0 and prior is vulnerable to cross-site scripting, which may allow an attacker to send malicious JavaScript code to an unsuspecting user, which could result in hijacking of the user’s cookie/session tokens, redirecting the user to a malicious webpage and performing unintended browser actions.

Affected products

• Advantech Webaccess/Scada: through 9.0

References

• https://us-cert.cisa.gov/ics/advisories/icsa-21-075-01
• https://us-cert.cisa.gov/ics/advisories/icsa-21-075-01

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