CVE-2025-34520: Arcserve UDP < 10.2 Authentication Bypass
An authentication bypass vulnerability in Arcserve Unified Data Protection (UDP) allows unauthenticated attackers to gain unauthorized access to protected functionality or user accounts. By manipulating specific request parameters or exploiting a logic flaw, an attacker can bypass login mechanisms without valid credentials and access administrator-level features. 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-2025-34520?
CVE-2025-34520 has a critical severity rating due to its potential to allow unauthenticated access to sensitive functionality.
How do I fix CVE-2025-34520?
To fix CVE-2025-34520, users should apply the latest security patches provided by Arcserve for all affected versions of Unified Data Protection.
Which versions of Arcserve Unified Data Protection are affected by CVE-2025-34520?
CVE-2025-34520 affects Arcserve Unified Data Protection versions 7.x and up to 10.2.
What type of attack does CVE-2025-34520 enable?
CVE-2025-34520 enables attackers to perform an authentication bypass allowing unauthorized access to user accounts and protected functionality.
Is immediate action required for CVE-2025-34520?
Yes, immediate action is required to mitigate the risks associated with CVE-2025-34520 due to its critical nature.