CVE-2015-5738

What it is

The RSA-CRT implementation in the Cavium Software Development Kit (SDK) 2.x, when used on OCTEON II CN6xxx Hardware on Linux to support TLS with Perfect Forward Secrecy (PFS), makes it easier for remote attackers to obtain private RSA keys by conducting a Lenstra side-channel attack.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

Exploit odds

2.4% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2016-07-26 17:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 00:29 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 2.4% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2016-07-26 17:59 UTC

Last modified

2026-06-17 00:29 UTC

Exploit probability

2.4% · EPSS, next 30 days

Weakness

CWE-200 · Information exposure

Record status

Modified

Affected

• Marvell Software Development Kit 2.0
• f5 Traffix Signaling Delivery Controller ≤ 3.5.1
• f5 Traffix Signaling Delivery Controller ≤ 4.4.0

Attack profile CVSS 3.1 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

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