Arcserve UDP < 10.2 Authentication Bypass_CVE-2025-34520

7.7 / 10

HIGH

CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Description

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.

Basic Information

ID CVE-2025-34520

Source VulnCheck

Published Aug 27, 2025 at 21:19

Affected Product

Vendor Arcserve

Product Unified Data Protection (UDP)

Version 10.2

Affected Versions Arcserve Unified Data Protection (UDP) 8.0
Arcserve Unified Data Protection (UDP) *

CWE Classification

CWE-288

References

support.arcserve.com /s/article/Important-Security-Bulletin-Must-read-for-all-Arcserve-UDP-customers-on-all-versions

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