CVE-2026-65641

Unauthenticated SMB Authentication Coercion in Veeam:One

Published Aug 26, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Description
A vulnerability allowing an unauthenticated network attacker to coerce SMB authentication from the service account.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Unauthenticated SMB Authentication Coercion in Veeam:One
Type Values Removed Values Added
First Time appeared Veeam
Veeam one
Vendors & Products Veeam
Veeam one
Type Values Removed Values Added
Description A vulnerability allowing an unauthenticated network attacker to coerce SMB authentication from the service account.
Weaknesses CWE-288
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
hackerone
Published
Updated
Aug 27, 2026, 3:04 PM
Reserved
Jul 22, 2026, 3:00 PM
Status
Deferred
Published
Aug 26, 2026, 10:16 PM
Modified
Sep 9, 2026, 3:41 PM