Quick answers
- Is CVE-2025-64393 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2025-64393 being exploited in the wild.
- How severe is CVE-2025-64393?
- Informational severity, published 7 October 2026.
- Which products and versions are affected?
- Veeam Backup & Replication version 12 up to 12.3.2.4854.
- Is there a fix for CVE-2025-64393?
- Yes: fixed in Veeam Backup & Replication 12.3.2 P4 (build 12.3.2.4934). Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2025-64393 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2025-64393?
- Check whether you run Veeam Backup & Replication at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: Veeam Backup & Replication 12.3.2 P4 (build 12.3.2.4934)
Technical details
The vulnerability is an insecure deserialization flaw in the Mount Service component that processes untrusted data from network requests. A Backup Viewer (read-only) role user can trigger remote code execution without user interaction, gaining complete control of the backup server with SYSTEM privileges.
Affected products
- Veeam Backup & Replication version 12 up to 12.3.2.4854
Timeline
- 2026-10-06: disclosed
- 2026-10-06: patched: Fix available in 12.3.2 P4