# CVE-2025-5351

## Summary

- **CVE ID:** CVE-2025-5351
- **Severity:** MEDIUM
- **CVSS Score:** 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** CWE-415
- **Published:** Jul 4, 2025
- **Last Modified:** Sep 1, 2026

## Description

A flaw was found in the key export functionality of libssh. The issue occurs in the internal function responsible for converting cryptographic keys into serialized formats. During error handling, a memory structure is freed but not cleared, leading to a potential double free issue if an additional failure occurs later in the function. This condition may result in heap corruption or application instability in low-memory scenarios, posing a risk to system reliability where key export operations are performed.

## Affected Products

- libssh — libssh (0.10.0)
- Red Hat — Red Hat Enterprise Linux 9 (0:0.10.4-18.el9)

## References

- [CNA](https://access.redhat.com/security/cve/CVE-2025-5351)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2369367)
- [CNA](https://access.redhat.com/errata/RHSA-2026:18683)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.53%
- **EPSS Percentile:** 43.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._