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TI-2026-46790 Aliases CVE-2026-65641GHSA-mffw-5w3v-pm66

A vulnerability allowing an unauthenticated network attacker to coerce SMB authentication from the service account.

Priority MEDIUM 47CWE-288Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-288.

Summary

A vulnerability allowing an unauthenticated network attacker to coerce SMB authentication from the service account.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00543 45th percentileScored 2026-11-07
Fix Fixed One (Veeam): 13.1, 13.0.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
VeeamOnebefore 13.1; before 13.0.213.1, 13.0.2Patch availableCNA
  • One VendorVeeam Affected before 13.1; before 13.0.2 Fixed in 13.1, 13.0.2 Patch available CNA

Remediation

  • Fix · CNA One (Veeam) Fixed in 13.1, 13.0.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-65641
  2. 2026-10-03 Alias added: GHSA-mffw-5w3v-pm66

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