CVE-2015-5146

What it is

ntpd in ntp before 4.2.8p3 with remote configuration enabled allows remote authenticated users with knowledge of the configuration password and access to a computer entrusted to perform remote configuration to cause a denial of service (service crash) via a NULL byte in a crafted configuration directive packet.

At a glance

Exploitability

Can be exploited over the network with a low-privilege account. High risk of service disruption.

Exploit odds

4.9% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2017-08-24 20:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 00:28 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 4.9% in the next 30 days (EPSS).
• Severity: 5.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2017-08-24 20:29 UTC

Last modified

2026-06-17 00:28 UTC

Exploit probability

4.9% · EPSS, next 30 days

Weakness

CWE-20 · Improper input validation

Record status

Modified

Affected

• Fedoraproject Fedora 21
• Fedoraproject Fedora 22
• Fedoraproject Fedora 23
• Debian Linux 7.0
• Debian Linux 8.0
• Ntp ≤ 4.2.8

Attack profile CVSS 3.0 · 5.3

Attack vector

Network

Complexity

High

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

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-2015-5146.md and follow it. Check whether this project is affected by CVE-2015-5146. 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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