SB2025061605 - Multiple vulnerabilities in AVEVA PI Connector for CygNet

Description

This security bulletin contains information about 2 vulnerabilities.

1) Stored cross-site scripting (CVE-ID: CVE-2025-4417)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

2) Improper validation of integrity check value (CVE-ID: CVE-2025-4418)

CWE-ID: CWE-354 - Improper Validation of Integrity Check Value

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper validation of integrity check value. A local administrator can modify data files and cause a denial of service condition on the target system.

Remediation

Install update from vendor's website.

References

• https://www.aveva.com/en/support-and-success/cyber-security-updates/
• https://www.cisa.gov/news-events/ics-advisories/icsa-25-162-09