A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.

The remote Oracle Linux 10 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2026-54210 advisory.

    [10.0.6-11]
    - Fix CVE-2026-14258

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote RockyLinux 10 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:54210 advisory.

    * dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length IPv6 ND option in Router     Advertisement handling (CVE-2026-14258)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 10 host has a package installed that is affected by a vulnerability as referenced in the ALSA-2026:54210 advisory.

    * dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length IPv6 ND option in Router     Advertisement handling (CVE-2026-14258)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:54210 advisory.

    The dhcpcd package provides a minimalistic network configuration daemon that supports IPv4 and IPv6     configuration including configuration discovery through NDP, DHCPv4 and DHCPv6 protocols.

    Security Fix(es):

    * dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length IPv6 ND option in Router     Advertisement handling (CVE-2026-14258)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted     IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during     packet storage and later be reparsed without adequate validation, causing the parser to enter a non-     advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of     service. (CVE-2026-14258)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
335465	Oracle Linux 10 : dhcpcd (ELSA-2026-54210)	Nessus	Oracle Linux Local Security Checks	Local	medium
335187	RockyLinux 10 : dhcpcd (RLSA-2026:54210)	Nessus	Rocky Linux Local Security Checks	Local	medium
335130	AlmaLinux 10 : dhcpcd (ALSA-2026:54210)	Nessus	Alma Linux Local Security Checks	Local	medium
334953	RHEL 10 : dhcpcd (RHSA-2026:54210)	Nessus	Red Hat Local Security Checks	Local	medium
324697	Linux Distros Unpatched Vulnerability : CVE-2026-14258	Nessus	Misc.	Local	medium

Detections

Analytics

CVE-2026-14258

medium

Tenable Plugins

medium

medium

medium

medium

medium