Medium severity · published Aug 10, 2021
CVE-2021-22676
UserExcelOut.asp within WebAccess/SCADA is vulnerable to cross-site scripting (XSS), which could allow an attacker to send malicious JavaScript code
6.1
CVSS
0.6%
EPSS
No
On KEV
Description
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).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
Webaccess/scada · Advantech
before 8.4.5; 9.0 before 9.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-22676
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-22676
Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-217-04
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