Arcserve Unified Data Protection up to 10.1 Web Interface cross site scripting

Summaryinfo

A vulnerability was found in Arcserve Unified Data Protection up to 10.1. It has been classified as problematic. The impacted element is an unknown function of the component Web Interface. Performing a manipulation results in cross site scripting. This vulnerability is cataloged as CVE-2025-34521. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in Arcserve Unified Data Protection up to 10.1. This affects an unknown code block of the component Web Interface. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

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.

The weakness was shared by watchTowr. The advisory is shared at support.arcserve.com. This vulnerability is uniquely identified as CVE-2025-34521 since 04/15/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 10.2 eliminates this vulnerability.

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Productinfo

Vendor

• Arcserve

Name

• Unified Data Protection

Version

• 10.0
• 10.1

CPE 2.3info

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CPE 2.2info

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