# CVE-2025-4658

## Summary

- **CVE ID:** CVE-2025-4658
- **Severity:** CRITICAL
- **CVSS Score:** 9.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L)
- **CWE:** CWE-305
- **Published:** May 13, 2025
- **Last Modified:** Mar 13, 2026

## 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.

## Affected Products

- OPKSSH — OPKSSH (0.1.0)

## References

- [CNA](https://github.com/openpubkey/opkssh)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.34%
- **EPSS Percentile:** 26.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._