PatchSiren cyber security CVE debrief

CVE-2025-70102 Roy Marples NetworkConfiguration CVE debrief

CVE-2025-70102 is a NULL pointer dereference vulnerability in dhcpcd 10.3.0. The vulnerability occurs in the `parse_option()` function (src/if-options.c:1886) when an unexpected or invalid option token or parsing state causes the lookup to yield NULL. This results in a member access on a NULL pointer of type 'struct dhcp_opt', leading to a runtime error and abort.

Vendor: Roy Marples NetworkConfiguration
Product: dhcpcd
CVSS: Unknown
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-15
Original CVE updated: 2026-06-15
Advisory published: 2026-06-15
Advisory updated: 2026-06-15

Who should care

Users of dhcpcd 10.3.0 should be aware of this vulnerability and take steps to mitigate it.

Technical summary

The vulnerability is caused by a NULL pointer dereference in the `parse_option()` function. This occurs when the function attempts to access a member of a NULL pointer of type 'struct dhcp_opt'.

Defensive priority

high

Recommended defensive actions

Update to a version of dhcpcd that is not vulnerable.

Evidence notes

The CVE record was obtained from the official CVE website. The vulnerability details were obtained from the NVD database.

Official resources

CVE-2025-70102 was published on 2026-06-15T20:16:24.827Z and has not been modified since.