CVE-2015-1822

6.5 MEDIUM 3% exploit odds Fix listed

What it is

chrony before 1.31.1 does not initialize the last "next" pointer when saving unacknowledged replies to command requests, which allows remote authenticated users to cause a denial of service (uninitialized pointer dereference and daemon crash) or possibly execute arbitrary code via a large number of command requests.

At a glance

Exploitability: Can be exploited over the network with a login. Limited direct impact.
Exploit odds: 2.9% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2015-04-16 14:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 00:23 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 2.9% in the next 30 days (EPSS).
Severity: 6.5 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2015-04-16 14:59 UTC
Last modified: 2026-06-17 00:23 UTC
Exploit probability: 2.9% · EPSS, next 30 days
Weakness: CWE-17
Record status: Modified

Affected

Debian Linux 7.0
Tuxfamily Chrony ≤ 1.31

Attack profile CVSS 2.0 · 6.5

Attack vector: Network
Complexity: Low
Authentication: Single
Confidentiality: Partial
Integrity: Partial
Availability: Partial

Raw vector

AV:N/AC:L/Au:S/C:P/I:P/A:P

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-2015-1822.md and follow it. Check whether this project is affected by CVE-2015-1822. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

· More options · Status badge

Download Square Reddit

Fix and advisories

References

NVD record · CVE.org record