Veeam and IBM Release Patches for High-Risk Flaws in Backup and AIX Systems
Mar 20, 2025
Vulnerability / Software Update
Veeam has released security updates to address a critical security flaw impacting its Backup & Replication software that could lead to remote code execution. The vulnerability, tracked as CVE-2025-23120 , carries a CVSS score of 9.9 out of 10.0. It affects 12.3.0.310 and all earlier version 12 builds. "A vulnerability allowing remote code execution (RCE) by authenticated domain users," the company said in an advisory released Wednesday. Security researcher Piotr Bazydlo of watchTowr has been credited with discovering and reporting the flaw, which has been resolved in version 12.3.1 (build 12.3.1.1139). According to Bazydlo and researcher Sina Kheirkhah, CVE-2025-23120 stems from Veeam's inconsistent handling of deserialization mechanism, causing an allowlisted class that can be deserialized to pave the way for an inner deserialization that implements a blocklist-based approach to prevent deserialization of data deemed risky by the company. This also means that ...