CVE-2025-54350 Denial of service in iperf3
A malformed authentication attempt triggers an assertion failure in iperf, causing the application to exit and resulting in a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-54350?
CVE-2025-54350 is a low-severity denial of service vulnerability in ES iperf3, published on 3 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt.
Weakness: CWE-617
Which versions are affected by CVE-2025-54350?
It affects 1 product.
Products include Es Iperf3.
How do I fix CVE-2025-54350?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-54350 being exploited?
There is no known exploitation of CVE-2025-54350 in the wild and no public exploit code.
Other vulnerabilities in ES iperf3
Sources
Also known as ALPINE-CVE-2025-54350, AZL-66057, AZL-66068, BELL-CVE-2025-54350, DEBIAN-CVE-2025-54350, GHSA-r6x8-74x9-5mc9 and 2 more.