What is CVE-2026-56116?

CVE-2026-56116 is a medium-severity vulnerability in Networkconfiguration Dhcpcd, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 6.5/10. Published 2026-06-23.

How severe is CVE-2026-56116?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Networkconfiguration Dhcpcd

CVE-2026-56116

dhcpcd through 10.3.2, fixed in commit 708b4a5, contains a memory leak vulnerability in the IPv6 Router Advertisement route information handling that allows an unauthenticated same-link attacker to cause denial of service by sending crafte…

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Networkconfiguration Dhcpcd — versions 0, 708b4a56bae080a5b18c2e0c4c6fbe103131a2b0

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-56116?: CVE-2026-56116 is a medium-severity vulnerability in Networkconfiguration Dhcpcd, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 6.5/10. Published 2026-06-23.
How severe is CVE-2026-56116?: Medium severity. CVSS v3 base score is 6.5 out of 10.