CVE-2025-54349 — MEDIUM (6.5)

Q: What is CVE-2025-54349?

CVE-2025-54349 is a vulnerability with a CVSS score of 6.5 (MEDIUM). In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow.

Q: How severe is CVE-2025-54349?

CVE-2025-54349 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2025-54349?

Check the references section above for vendor advisories and patch information. Affected products include: Es Iperf3.

Vulnerability Description

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

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Es	Iperf3	>= 3.2, < 3.19.1

Related Weaknesses (CWE)

CWE-193

References

https://github.com/esnet/iperf/commit/4e5313bab0b9b3fe03513ab54f722c8a3e4b7bdfPatch
https://github.com/esnet/iperf/releases/tag/3.19.1Release Notes
https://lists.debian.org/debian-lts-announce/2025/08/msg00020.html

FAQ

What is CVE-2025-54349?

CVE-2025-54349 is a vulnerability with a CVSS score of 6.5 (MEDIUM). In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow.

How severe is CVE-2025-54349?

CVE-2025-54349 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-54349?

Check the references section above for vendor advisories and patch information. Affected products include: Es Iperf3.