Credential disclosure via host verification bypass
Published Oct 21, 2025 · Updated Oct 21, 2025
Improper host authentication in wolfSSH clients 1.4.20 and earlier allows remote attackers to obtain credentials via a malicious SSH server. The fix changes keying and connection-side state tracking, but wolfSSL's public materials do not disclose the exact invalid state transition that skips host verification. Exploitation requires a client connection to an attacker-controlled SSH server; bypassed server identity checks expose credentials presented during authentication.
Summary
What happened
Improper host authentication in wolfSSH clients 1.4.20 and earlier allows remote attackers to obtain credentials via a malicious SSH server. The fix changes keying and connection-side state tracking, but wolfSSL's public materials do not disclose the exact invalid state transition that skips host verification. Exploitation requires a client connection to an attacker-controlled SSH server; bypassed server identity checks expose credentials presented during authentication.
The record
- CVE
- CVE-2025-11625
- Published
- Oct 21, 2025
- Updated
- Oct 21, 2025
- Vendor
- wolfSSL
- Product
- wolfSSH
- Classifications
- CWE-287, T1557
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 21, 2025CVE publishedPublication date reported by the CVE source.
- Oct 21, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=1.4.20;0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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