Critical severity · published Oct 21, 2025
CVE-2025-11625
Host verification bypass and credential leak
9.8
CVSS
0.4%
EPSS
No
On KEV
Description
Improper host authentication vulnerability in wolfSSH version 1.4.20 and earlier clients that allows authentication bypass and leaking of clients credentials.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WO
wolfSSH · wolfSSL
1.4.20;0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-11625
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-11625
Issue Tracking
https://github.com/wolfSSL/wolfssh/pull/840
More from wolfSSH
9.8
CVE-2025-14942
Authentication Bypass
8.8
CVE-2026-83540
wolfSSHd on Windows race condition leading to logon token reused across connections
8.1
CVE-2025-15382
Client SCP Request Triggers Buffer Overread by 1 Byte
4.3
CVE-2026-0930
Potential wolfSSHd Buffer out-of-bounds Read on Windows Handling Terminal Resize