CVE-2026-115486

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 3.1

7.1CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

EPSS

0.2% chance of exploitation in the next 30 days; higher than 10% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2026-10-23

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

References

• https://access.redhat.com/security/cve/CVE-2026-115486
• https://bugzilla.redhat.com/show_bug.cgi?id=2556267

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