What is CVE-2026-56117?

CVE-2026-56117 is a medium-severity vulnerability, classified under Use After Free. CVSS score: 4.7/10. Published 2026-06-23.

How severe is CVE-2026-56117?

Medium severity. CVSS v3 base score is 4.7 out of 10.

CVE-2026-56117

CVE-2026-56117

dhcpcd through 10.3.2, fixed in commit 78ea09e, contains a heap use-after-free vulnerability in the control socket handling within src/control.c that allows local unprivileged attackers to trigger memory corruption when privilege separatio…

Vulnerability class: Use-After-Free

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2026-56117?: CVE-2026-56117 is a medium-severity vulnerability, classified under Use After Free. CVSS score: 4.7/10. Published 2026-06-23.
How severe is CVE-2026-56117?: Medium severity. CVSS v3 base score is 4.7 out of 10.