CVE-2025-64393: CWE-502 Deserialization of Untrusted Data in Veeam Backup and Replication
Description
This vulnerability in Veeam Backup & Replication allows a Backup Viewer to execute arbitrary code as SYSTEM on the backup server.
CVSS v4.0
Score 9.4critical
Affected software
Veeam
Backup and Replication
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Veeam Backup & Replication (CWE-502: Deserialization of Untrusted Data) enables a Backup Viewer to execute arbitrary code as SYSTEM on the backup server. The flaw exists in versions >=12 and <12.3.2.4934. The CVSS 4.0 vector indicates it is remotely exploitable with low complexity and no user interaction required, resulting in full system compromise. No known exploits in the wild have been reported. The vulnerability was published on 2026-10-07.
Potential Impact
Successful exploitation allows an attacker with Backup Viewer privileges to execute arbitrary code with SYSTEM privileges on the backup server, potentially leading to full system compromise, data loss, or disruption of backup operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch or workaround information is provided in the available data. Users should monitor Veeam's official channels for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2025-10-31T15:00:01.447Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac60afc2cdf04f65630e9cb
Added to database: 10/07/2026, 09:03:56 UTC
Last enriched: 10/07/2026, 09:18:23 UTC
Last updated: 10/07/2026, 13:34:01 UTC
Views: 9
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