Is CVE-2023-7250 in the CISA KEV catalog?

No. CVE-2023-7250 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-7250?

CVE-2023-7250 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2023-7250?

CVE-2023-7250 has an EPSS score of 0.93% (56th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-7250?

Upgrade iperf3 on debian 11 to 3.9-1+deb11u2 or later. Fixes are available for 9 affected products.

CVE & CISA-KEV Catalog

CVE-2023-7250

MEDIUM

5.3

CVSS v3

NVD

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.

CWE-183

How to fix

Remediation Available

iperf3Debian

Fixed in:3.9-1+deb11u2CVE-2023-7250

Fixed in:3.15-1CVE-2023-7250

iperf3Red Hat / RHEL

Fixed in:0:3.5-10.el8_10RHSA-2024:4241

Fixed in:0:3.9-13.el9RHSA-2024:9185

iperf3Rocky

Fixed in:0:3.5-10.el8_10RHSA-2024:4241

Fixed in:0:3.9-13.el9RHSA-2024:9185

iperf3-debuginfoRocky

Fixed in:0:3.5-10.el8_10RHSA-2024:4241

Fixed in:0:3.9-13.el9RHSA-2024:9185

iperf3-debuginfoRed Hat / RHEL

Fixed in:0:3.5-10.el8_10RHSA-2024:4241

Fixed in:0:3.9-13.el9RHSA-2024:9185

iperf3-debugsourceRocky

Fixed in:0:3.5-10.el8_10RHSA-2024:4241

Fixed in:0:3.9-13.el9RHSA-2024:9185

iperf3-debugsourceRed Hat / RHEL

Fixed in:0:3.5-10.el8_10RHSA-2024:4241

Fixed in:0:3.9-13.el9RHSA-2024:9185

iperf3Ubuntu

Fixed in:3.7-3ubuntu0.1~esm2USN-7970-1

Fixed in:3.9-1+deb11u1ubuntu0.1USN-7970-1

Fixed in:3.16-1ubuntu0.1~esm1USN-7970-1

Fixed in:3.18-2ubuntu0.1USN-7970-1

libiperf0Ubuntu

Fixed in:3.7-3ubuntu0.1~esm2USN-7970-1

Fixed in:3.9-1+deb11u1ubuntu0.1USN-7970-1

Fixed in:3.16-1ubuntu0.1~esm1USN-7970-1

Fixed in:3.18-2ubuntu0.1USN-7970-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.93%probability of exploitation in 30 days

56thpercentile

Moderate risk: more likely to be exploited than 56% of all known CVEs.

References

Third-Party Advisory4

Other references1

lists.debian.org

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-03.