CVE-2026-115486 Open-iscsi: open-iscsi: ipv6 neighbor discovery missing option length validation in iscsiuio allows arp table poisoning
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-115486?
CVE-2026-115486 is a high-severity vulnerability in Red Hat Enterprise Linux 10, published on 23 Oct 2026.
Official description
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.
Weakness: CWE-125
Which versions are affected by CVE-2026-115486?
How do I fix CVE-2026-115486?
No fix has been published for CVE-2026-115486 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-115486 being exploited?
There is no known exploitation of CVE-2026-115486 in the wild and no public exploit code.
Sources
Also known as AZL-111392, DEBIAN-CVE-2026-115486, GHSA-9f4r-jjqf-4v98, UBUNTU-CVE-2026-115486.