CVE-2025-4658 - CVE House
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Status published Critical CVE-2025-4658

Authentication Bypass in OPKSSH

Vulnerability Description

Versions of OpenPubkey library prior to 0.10.0 contained a vulnerability that would allow a specially crafted JWS to bypass signature verification. As OPKSSH depends on the OpenPubkey library for authentication, this vulnerability in OpenPubkey also applies to OPKSSH versions prior to 0.5.0 and would allow an attacker to bypass OPKSSH authentication.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Ethan Heilman

References

More from OPKSSH

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CVE-2025-3757
Authentication Bypass in OpenPubKey
Critical 9.3

Affected Vendor

Affected Software

OPKSSH
Vulnerable Versions:
0.1.0

Timeline

Official Publish: May 13th, 2025
Last Modified: May 13th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-305

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.