# libiperf0 3.18-2ubuntu0.1: libiperf0 3.18-2ubuntu0.1 for Ubuntu 25.10 (questing)

libiperf0 3.18-2ubuntu0.1, released August 2, 2025, fixes 2 CVEs in libiperf0. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-questing-libiperf0-3.18-2ubuntu0.1
- Platform: Linux
- Released: Aug 2, 2025
- Priority: High (Closes CVE-2025-54349, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libiperf0](https://patchblox.com/security/data/product/linux/libiperf0.md) | Ubuntu 25.10 (questing) | 3.18-2ubuntu0.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-54349](https://patchblox.com/security/data/cve/CVE-2025-54349.md) | High | In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow. | 10.0 | 0.0047 |  |
| [CVE-2025-54350](https://patchblox.com/security/data/cve/CVE-2025-54350.md) | Routine | In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt. | 5.3 | 0.0048 |  |

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Data as of 2026-11-11T19:49:26Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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