CVE-2025-14942Network attack vector

Credential disclosure and authentication bypass via message reordering

Published Jan 6, 2026 · Updated Jan 6, 2026

Improper authentication in wolfSSL wolfSSH 1.4.21 and earlier allows remote attackers to expose client credentials via reordered SSH messages. The client key-exchange state machine accepts messages outside the expected sequence, allowing a peer to elicit a cleartext password, a bogus signature, or skipped user authentication. The client must connect to an attacker-controlled SSH peer; server builds contain the same ordering defect, but the vendor reports no specific server-side attack.

CVSS severity9.4
Critical
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper authentication in wolfSSL wolfSSH 1.4.21 and earlier allows remote attackers to expose client credentials via reordered SSH messages. The client key-exchange state machine accepts messages outside the expected sequence, allowing a peer to elicit a cleartext password, a bogus signature, or skipped user authentication. The client must connect to an attacker-controlled SSH peer; server builds contain the same ordering defect, but the vendor reports no specific server-side attack.

The record

CVE
CVE-2025-14942
Published
Jan 6, 2026
Updated
Jan 6, 2026
Vendor
wolfSSL
Product
wolfSSH
Classifications
CWE-287, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.4.22

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

wolfSSL · wolfSSHversion=0 <1.4.22

Published CVSS scores

9.4wolfSSL Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo