What is CVE-2017-7401?

CVE-2017-7401 is a high-severity vulnerability in Collectd, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2017-04-03.

How severe is CVE-2017-7401?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Collectd

CVE-2017-7401

Incorrect interaction of the parse_packet() and parse_part_sign_sha256() functions in network.c in collectd 5.7.1 and earlier allows remote attackers to cause a denial of service (infinite loop) of a collectd instance (configured with "SecurityLevel None" and with empty "AuthFile" options) via a crafted UDP packet.

Published 2017-04-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.040 (90.2th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.040 · newest: 0.040 · change: 0.000

Affected products

Collectd

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

www.securityfocus.com/bid/97321 (VDB Entry, Third Party Advisory, vdb-entry)
access.redhat.com/errata/RHSA-2017:1285 (vendor-advisory)
github.com/collectd/collectd/issues/2174 (Patch, Third Party Advisory, Issue Tracking)
access.redhat.com/errata/RHSA-2018:2615 (vendor-advisory)
access.redhat.com/errata/RHSA-2017:1787 (vendor-advisory)

Frequently asked questions

What is CVE-2017-7401?: CVE-2017-7401 is a high-severity vulnerability in Collectd, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2017-04-03.
How severe is CVE-2017-7401?: High severity. CVSS v3 base score is 7.5 out of 10.