Is CVE-2025-34522 actively exploited?

No active exploitation of CVE-2025-34522 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-34522 be exploited remotely?

Yes. CVE-2025-34522 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-34522?

CVE-2025-34522 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2025-34522

CRITICAL

CVE-2025-34522

CWE-122Published: August 27, 2025· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A heap-based buffer overflow vulnerability exists in the input parsing logic of Arcserve Unified Data Protection (UDP). This flaw can be triggered without authentication by sending specially crafted input to the target system. Improper bounds checking allows an attacker to overwrite heap memory, potentially leading to application crashes or remote code execution. Exploitation occurs in the context of the affected process and does not require user interaction. The vulnerability poses a high risk due to its pre-authentication nature and potential for full compromise. 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.

NVD Source

Technical Analysis

CVE-2025-34522 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.