Vulnerability · Published Aug 3, 2025 · Assigned by mitre
CVE-2025-54349
Medium 6.5
In plain English
A medium-severity security flaw in iperf3 from ES. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 59.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | iperf3 | 3.17.1-5.el10_1 | ALSA-2026:1597 |
| AlmaLinux:8 | iperf3 | 3.5-12.el8_10 | ALSA-2026:1592 |
| AlmaLinux:9 | iperf3 | 3.9-14.el9_7.1 | ALSA-2026:1595 |
| Alpine:v3.22 | iperf3 | 3.19.1-r0 | ALPINE-CVE-2025-54349 |
| Alpine:v3.23 | iperf3 | 3.19.1-r0 | ALPINE-CVE-2025-54349 |
| Alpine:v3.24 | iperf3 | 3.19.1-r0 | ALPINE-CVE-2025-54349 |
| Debian:12 | iperf3 | 3.12-1+deb12u2 | DEBIAN-CVE-2025-54349 |
| Debian:13 | iperf3 | 3.18-2+deb13u1 | DEBIAN-CVE-2025-54349 |
| Debian:14 | iperf3 | 3.19.1-1 | DEBIAN-CVE-2025-54349 |
| Rocky Linux:10 | iperf3 | 0:3.17.1-5.el10_1 | RLSA-2026:1597 |
| Rocky Linux:8 | iperf3 | 0:3.5-12.el8_10 | RLSA-2026:1592 |
| Rocky Linux:9 | iperf3 | 0:3.9-14.el9_7.1 | RLSA-2026:1595 |
| Ubuntu:22.04:LTS | iperf3 | 3.9-1+deb11u1ubuntu0.1 | UBUNTU-CVE-2025-54349 |
| Ubuntu:22.04:LTS | iperf3 | 3.9-1+deb11u1ubuntu0.1 | USN-7970-1 |
| Ubuntu:25.10 | iperf3 | 3.18-2ubuntu0.1 | USN-7970-1 |
| Ubuntu:25.10 | iperf3 | 3.18-2ubuntu0.1 | UBUNTU-CVE-2025-54349 |
Affected products (as reported)
Weakness: CWE-193 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L