CVE-2025-23390
Fleet doesn’t validate a server’s certificate when connecting through SSH
CVSS Score
6.3
EPSS Score
0.0%
EPSS Percentile
0th
A vulnerability has been identified within Fleet where, by default, Fleet will automatically trust a remote server’s certificate when connecting through SSH if the certificate isn’t set in the `known_hosts` file. This could allow the execution of a man-in-the-middle (MitM) attack against Fleet. In case the server that is being connected to has a trusted entry in the known_hosts file, then Fleet will correctly check the authenticity of the presented certificate.
| CWE | CWE-295 |
| Vendor | suse |
| Product | fleet |
| Published | Oct 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Affected Versions
SUSE / fleet
0.9.0-rc.1 < 0.10.12 0.11.0 < 0.11.7 0.12.0 < 0.12.2