What’s Vulnerable › Vulnerabilities

CVE-2017-16820

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-11-14 · updated 2026-06-17
• Weakness: CWE-415

Description

The csnmp_read_table function in snmp.c in the SNMP plugin in collectd before 5.6.3 is susceptible to a double free in a certain error case, which could lead to a crash (or potentially have other impact).

Affected products

• Collectd: before 5.6.3 — fixed in 5.6.3

How to fix

Upgrade to a fixed version: Collectd 5.6.3. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2018:0252
• https://access.redhat.com/errata/RHSA-2018:0299
• https://access.redhat.com/errata/RHSA-2018:0560
• https://access.redhat.com/errata/RHSA-2018:1605
• https://access.redhat.com/errata/RHSA-2018:2615
• https://bugs.debian.org/881757
• https://github.com/collectd/collectd/commit/d16c24542b2f96a194d43a73c2e5778822b9cb47
• https://github.com/collectd/collectd/issues/2291
• https://github.com/collectd/collectd/releases/tag/collectd-5.6.3
• https://security.gentoo.org/glsa/201803-10
• https://access.redhat.com/errata/RHSA-2018:0252
• https://access.redhat.com/errata/RHSA-2018:0299

Get alerted when CVE-2017-16820 or the next vulnerability affects your stack