How severe is CVE-2024-26306?

CVE-2024-26306 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-26306 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-26306?

CVE-2024-26306 primarily affects Es Iperf3. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-26306?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-26306 have an EU (EUVD) identifier?

Yes. CVE-2024-26306 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-23577.

When was CVE-2024-26306 published?

CVE-2024-26306 was published on 2024-05-14 and last updated on 2026-06-17.

CVE-2024-26306

CVE-2024-26306 is a medium-severity vulnerability in Es Iperf3 with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-385.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-23577
Weakness: CWE-385
Affected product: Es Iperf3
Published: 2024-05-14
Last modified: 2026-06-17

Description

iPerf3 before 3.17, when used with OpenSSL before 3.2.0 as a server with RSA authentication, allows a timing side channel in RSA decryption operations. This side channel could be sufficient for an attacker to recover credential plaintext. It requires the attacker to send a large number of messages for decryption, as described in "Everlasting ROBOT: the Marvin Attack" by Hubert Kario.

Frequently asked questions

What is CVE-2024-26306?: iPerf3 before 3.17, when used with OpenSSL before 3.2.0 as a server with RSA authentication, allows a timing side channel in RSA decryption operations. This side channel could be sufficient for an attacker to recover credential plaintext. It requires the attacker to send a large number of messages for decryption, as described in "Everlasting ROBOT: the Marvin Attack" by Hubert Kario.
How severe is CVE-2024-26306?: CVE-2024-26306 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-26306 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-26306?: CVE-2024-26306 primarily affects Es Iperf3. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-26306?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-26306 have an EU (EUVD) identifier?: Yes. CVE-2024-26306 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-23577.
When was CVE-2024-26306 published?: CVE-2024-26306 was published on 2024-05-14 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:es:iperf3:*:*:*:*:*:*:*:*
cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:*

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CVE-2023-38403 — High (CVSS 7.5): iperf3 before 3.14 allows peers to cause an integer overflow and heap corruption via a crafted length field.
CVE-2025-54349 — Medium (CVSS 6.5): In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow.
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