CVE-2018-5407

4.7 MEDIUM 3% exploit odds Fix listed

What it is

Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to timing attacks via a side-channel timing attack on 'port contention'.

At a glance

Exploitability: Can be exploited locally on the machine with a low-privilege account. High risk of data exposure.
Exploit odds: 3.4% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2018-11-15 21:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-10-08 22:16 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 3.4% in the next 30 days (EPSS).
Severity: 4.7 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2018-11-15 21:29 UTC
Last modified: 2026-10-08 22:16 UTC
Exploit probability: 3.4% · EPSS, next 30 days
Weakness: CWE-200 · Information exposure
Record status: Modified

Affected

Canonical Ubuntu Linux 14.04
Canonical Ubuntu Linux 16.04
Canonical Ubuntu Linux 18.04
Canonical Ubuntu Linux 18.10
Debian Linux 8.0
Debian Linux 9.0
Nodejs node.js < 6.14.4
Nodejs node.js < 8.11.4

Attack profile CVSS 3.1 · 4.7

Attack vector: Local
Complexity: High
Privileges needed: Low
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Raw vector

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

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.

Read https://cve-list.com/agent/cve/CVE-2018-5407.md and follow it. Check whether this project is affected by CVE-2018-5407. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record