🛡️ CVE-2025-54349 — iperf3

🟡 CVSS 6.5 — Medium ✅ No Known Exploit CWE-193 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability low.

Affected software

CVE-2025-54349 is recorded against 1 package.

  • iperf3 (from 3.2 up to 3.19.1)

Timeline and source

Published on 3 August 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
github.com
lists.debian.org

CVE-2025-54349 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
CWE CWE-193
Public Exploit ✅ No
Source NVD
Published 2025-08-03
Updated 2026-08-11
Modified 2026-06-17

Affected Packages

Software From version Fixed in
iperf3 3.2 3.19.1

Similar Threats

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