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TI-2025-43885 Aliases CVE-2025-64393GHSA-6m95-66x2-x5hx

Veeam Backup & Replication flaw lets viewers run code as SYSTEM

Priority MEDIUM 51CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

Veeam Backup & Replication versions from 12 before 12.3.2.4934 are affected. A deserialization of untrusted data flaw (CWE-502) lets a user with the Backup Viewer role run arbitrary code as SYSTEM on the backup server. The attacker needs low privileges and no user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

This vulnerability in Veeam Backup & Replication allows a Backup Viewer to execute arbitrary code as SYSTEM on the backup server.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.05199 92nd percentileScored 2026-11-07
Fix Fixed Backup and Replication (Veeam): 12.3.2.4934

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
VeeamBackup and Replication12 to before 12.3.2.493412.3.2.4934Patch availableCNA
  • Backup and Replication VendorVeeam Affected 12 to before 12.3.2.4934 Fixed in 12.3.2.4934 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:veeam:veeam_backup_\&_replication:*:*:*:*:*:*:*:*——Veeam
  • cpe:2.3:a:veeam:veeam_backup_\&_replication:*:*:*:*:*:*:*:* Versions — — ·Veeam

Remediation

Update Veeam Backup & Replication 12 to version 12.3.2.4934, which fixes this flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Backup and Replication (Veeam) Fixed in 12.3.2.4934

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Veeam Backup and Replication 12.3.2.4934

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-68972 Veeam Backup and Replication lets viewers change credentialsPriority LOW 27
    Show all 2 records →

Timeline

  1. 2026-10-07 Threatist record created from CVE-2025-64393
  2. 2026-10-07 Alias added: GHSA-6m95-66x2-x5hx
  3. 2026-10-07 CISA SSVC decision points changed
  4. 2026-10-08 CISA SSVC decision points changed
  5. 2026-10-25 EPSS moved to the 90th–95th percentile

References

Other 1

  • TI-2024-27107 Deserialization of untrusted data in Veeam Backup and Recovery KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09844 Veeam Backup & Replication 10.x and 11.x has Incorrect Access Control (issue 1 of 2). KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09843 Improper limitation of path names in Veeam Backup & Replication 9.5U3, 9.5U4,10.x, and… KEVCVSS 3.1HIGH 8.8
  • TI-2023-12256 Missing authentication in Veeam Backup & Replication KEVCVSS 3.1HIGH 7.5
  • TI-2020-08796 Deserialization of untrusted data in Veeam One Agent CVSS 3.1CRITICAL 9.8
  • TI-2024-19623 Veeam Backup Enterprise Manager allows unauthenticated users to log in as any user to enterprise manager web interface. CVSS 3.0CRITICAL 9.8
See all 119 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences