Name: Red Hat: CVE-2026-115486: open-iscsi: open-iscsi: IPv6 Neighbor Discovery missing option length validation in iscsiuio allows ARP table poisoning
Creator: Rapid7
Published: 2026-10-23T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-115486, CWE-125, CVSS 7.1, EPSS 0.00207

A flaw was found in the iscsiuio component of open-iscsi. The IPv6 Neighbor Discovery handler accesses link-layer address options at a fixed offset without verifying the packet contains them. Additionally, the ARP table is updated unconditionally with attacker-controlled addresses from the packet headers. An attacker on the same network segment can send a minimal Neighbor Advertisement to poison the ARP table and redirect network traffic.

CVSS Details

CVSS 3.1 Base Score: 7.1
CVSS 3.1 Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Redhat_linux	—	No solution exists	Oct 26, 2026	Oct 20, 2026

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CVSS Details

Covered by Rapid7

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