Critical Veeam Vulnerability Allows RCE Attacks on Backup Servers

Cybersecuritynews •Guru Baran • June 9, 2026

A critical security vulnerability has been disclosed in Veeam Backup & Replication, one of the most widely deployed enterprise backup solutions globally. Tracked as CVE-2026-44963, the flaw enables authenticated domain users to execute arbitrary code remotely on backup servers, posing severe risks to organizations relying on Veeam for data protection and recovery operations. The vulnerability […]

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Critical RCE Vulnerability in Veeam Backup Exposes Organizations to Attacks Veeam has disclosed a critical vulnerability (CVE-2026-44963) affecting its Backup & Replication software, allowing authenticated domain users to execute remote code on domain-joined backup servers. This flaw impacts versions 12.3.2.4465 and earlier, with a patch available in version 12.3.2.4854. Many organizations have joined their Veeam servers to a Windows domain, contrary to best practices, making them vulnerable to exploitation. Although no active exploitation has been reported, the potential for attackers to develop exploits following the patch release is significant. Ransomware gangs have historically targeted Veeam servers to hinder recovery efforts and steal sensitive data. Veeam's products are widely used, with over 550,000 customers globally, including a large percentage of Fortune 500 companies. Security teams are urged to apply the latest updates immediately to mitigate risks. 7 sources 72

Extracted Entities

Attack Types (1)

Zero-day Exploit

CVEs (1)

CVE-2026-44963