Arcserve UDP < 10.2 Pre-Authentication Heap Overflow_CVE-2025-34523

9.2 / 10

CRITICAL

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

Description

A heap-based buffer overflow vulnerability exists in the exists in the network-facing input handling routines of Arcserve Unified Data Protection (UDP). This flaw is reachable without authentication and results from improper bounds checking when processing attacker-controlled input. By sending specially crafted data, a remote attacker can corrupt heap memory, potentially causing a denial of service or enabling arbitrary code execution depending on the memory layout and exploitation techniques used. This vulnerability is similar in nature to CVE-2025-34522 but affects a separate code path or component. No user interaction is required, and exploitation occurs in the context of the vulnerable process. 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-2025-34523

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-122

References

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

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