CVE-2023-7250

Iperf3: possible denial of service

MEDIUM
5.3
CVSS Score
Published: March 18, 2024 at 12:21 PM UTC
Updated: June 17, 2026 at 06:52 AM UTC
5 products affected across 2 vendorsEnterprise LinuxEnterprise Linux for IBM Z SystemsEnterprise Linux for Power Little Endian

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A malicious or malfunctioning client can send less than the expected amount of data to the iperf server, which can cause the server to hang indefinitely waiting for the remainder or until the connection gets closed. This will prevent other connections to the server, leading to a denial of service.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.15
Affected range stops below 3.15, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 0:3.5-10.el8_10 (unaffected)
Vendor states this is fixed in 0:3.9-13.el9 (unaffected)
Vendor states this is fixed in 7 (unknown)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2024:4241
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2024:9185
VDB Entryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/security/cve/CVE-2023-7250
Issue Trackingx_refsource_REDHATThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2244707
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/01/msg00027.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-183

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