CVE-2021-22676

6.1 mediumEPSS 0.6%

Medium (6.1) in advantech webaccess\/scada. EPSS 0.6% chance of exploitation in the next 30 days.

UserExcelOut.asp within WebAccess/SCADA is vulnerable to cross-site scripting (XSS), which could allow an attacker to send malicious JavaScript code. This could result in hijacking of cookie/session tokens, redirection to a malicious webpage, and unintended browser action on the WebAccess/SCADA (WebAccess/SCADA versions prior to 8.4.5, WebAccess/SCADA versions prior to 9.0.1).

Severity

CVSS 3.1

6.1 medium

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

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-08-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

advantech:webaccess\/scada

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-217-04
https://us-cert.cisa.gov/ics/advisories/icsa-21-217-04

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