CVE-2025-34521: Arcserve UDP < 10.2 Reflected Cross-Site Scripting (XSS)
A reflected cross-site scripting (XSS) vulnerability exists in the web interface of the Arcserve Unified Data Protection (UDP), where unsanitized user input is improperly reflected in HTTP responses. This flaw allows remote attackers with low privileges to craft malicious links that, when visited by another user, execute arbitrary JavaScript in the victim’s browser. Successful exploitation may lead to session hijacking, credential theft, or other client-side impacts. The vulnerability requires user interaction and occurs within a shared browser context. This vulnerability affects all UDP versions prior to 10.2. UDP 10.2 includes the necessary patches and requires no action. Versions 8.0 through 10.1 are supported and require either patch application or upgrade to 10.2. Versions 7.x and earlier are unsupported or out of maintenance and must be upgraded to 10.2 to remediate the issue.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-34521?
CVE-2025-34521 is classified as a reflected cross-site scripting vulnerability with a potential impact on the security of affected web applications.
How do I fix CVE-2025-34521?
To fix CVE-2025-34521, ensure to apply the latest security patches provided by Arcserve for Unified Data Protection.
Who is affected by CVE-2025-34521?
CVE-2025-34521 affects users of Arcserve Unified Data Protection versions up to and including 10.2.
What are the risks associated with CVE-2025-34521?
The risks associated with CVE-2025-34521 include the potential for attackers to execute malicious scripts in the context of a user's session.
Can CVE-2025-34521 be exploited remotely?
Yes, CVE-2025-34521 can be exploited remotely by attackers with low privileges through crafted malicious links.