CVE-2025-34520 — Arcserve UDP < 10.2 Authentication Bypass

Description (CNA)

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 (CNA)

Vendor / product	Versions
Arcserve / Unified Data Protection (UDP)	unaffected 10.2; affected 8.0 through 10.1; affected 0 through 7.*

CWE

CWE-288

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.