Cyber Resilience

CVE-2024-26306

Medium

Published: 14 May 2024

Published
14 May 2024
Modified
03 November 2025
KEV Added
Patch
CVSS Score v3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0112 78.6th percentile
Risk Priority 12 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-26306 is a medium-severity Covert Timing Channel (CWE-385) vulnerability in Es Iperf3. Its CVSS base score is 5.9 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Credential Access (T1212); ranked in the top 21.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

attacker to send a large number of messages for decryption, as described in "Everlasting ROBOT: the Marvin Attack" by Hubert Kario.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
Why these techniques?

The timing side-channel in iPerf3 RSA decryption enables remote attackers to recover authentication credentials by sending numerous decryption requests, directly facilitating Exploitation for Credential Access (T1212).

Affected Assets

es
iperf3
≤ 3.17
netapp
bootstrap os
all versions

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-385

Directly targets covert timing channels by requiring identification and bandwidth estimation, enabling mitigation that reduces or eliminates their usability.

References