https://reddit.com/r/cybersecurity/comments/1rs2xyp/cve202621666_cvss_99_critical_veeam_backup_rce/: 🚨 CVE-2026-21666 (CVSS 9.9) – Critical Veeam Backup RCE Could Let Attackers Take Over Backup Servers
Published Mar 12, 2026
·Updated
Affected Software
1 affected component
Veeam Backup & Replication
Frequently Asked Questions
1
What is the severity of CVE-2026-21666?
CVE-2026-21666 has a severity score of 9.9, categorized as critical.
2
How do I fix CVE-2026-21666?
You should update Veeam Backup & Replication to the latest version that addresses CVE-2026-21666.
3
What systems are affected by CVE-2026-21666?
CVE-2026-21666 affects Veeam Backup & Replication systems.
4
What type of vulnerability is CVE-2026-21666?
CVE-2026-21666 is classified as a remote code execution vulnerability.
5
What impact does CVE-2026-21666 have on organizations?
CVE-2026-21666 can compromise backup infrastructure and potentially enable ransomware attacks.