# libssh-4 0.9.3-2ubuntu2.5+esm1: libssh-4 0.9.3-2ubuntu2.5+esm1 for Ubuntu 20.04 LTS (focal)

libssh-4 0.9.3-2ubuntu2.5+esm1, released June 24, 2025, fixes 3 CVEs in libssh-4. None of them is reported as exploited. Patch Radar priority: Routine. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-focal-libssh-4-0.9.3-2ubuntu2.5-esm1
- Platform: Linux
- Released: Jun 24, 2025
- Priority: Routine (Closes 3 CVEs, none high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libssh-4](https://patchblox.com/security/data/product/linux/libssh-4.md) | Ubuntu 20.04 LTS (focal) | 0.9.3-2ubuntu2.5+esm1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-5318](https://patchblox.com/security/data/cve/CVE-2025-5318.md) | Routine | Libssh: out-of-bounds read in sftp_handle() | 5.4 | 0.0189 |  |
| [CVE-2025-4878](https://patchblox.com/security/data/cve/CVE-2025-4878.md) | Routine | Libssh: use of uninitialized variable in privatekey_from_file() | 6.5 | 0.0023 |  |
| [CVE-2025-4877](https://patchblox.com/security/data/cve/CVE-2025-4877.md) | Routine | Libssh: write beyond bounds in binary to base64 conversion functions | 6.5 | 0.0022 |  |

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Data as of 2026-11-12T19:57:06Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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