What’s Vulnerable › Vulnerabilities

CVE-2021-34540

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-06-11 · updated 2026-06-17
• Weakness: CWE-79

Description

Advantech WebAccess 8.4.2 and 8.4.4 allows XSS via the username column of the bwRoot.asp page of WADashboard.

Affected products

• Advantech WebAccess: 8.4.2, 8.4.4

References

• https://github.com/ethancsyang/CveProject/tree/main/CVE-2021-34540
• https://www.advantech.com/support
• https://github.com/ethancsyang/CveProject/tree/main/CVE-2021-34540
• https://www.advantech.com/support

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