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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
MEDIUM 6.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-15
Original CVE updated
2026-06-16
Advisory published
2026-06-15
Advisory updated
2026-06-16

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.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-70102 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-70102

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-70102 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-70102

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.