Is CVE-2026-115486 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-115486 being exploited in the wild.

How severe is CVE-2026-115486?

High severity, with a CVSS score of 7.1, published 23 October 2026.

Is there a fix for CVE-2026-115486?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-115486 attacked?

It is attacked from the adjacent network.

Am I affected by CVE-2026-115486?

Check whether you run Open-Iscsi at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-115486: open-iscsi IPv6 Neighbor Discovery handler buffer access vulnerability

CVE-2026-115486 · Severity: high · CVSS 7.1 · Published 2026-10-23

A vulnerability in open-iscsi's IPv6 Neighbor Discovery handler allows an attacker on the same network segment to send a malicious Neighbor Advertisement packet that poisons the ARP table and redirects network traffic. This can lead to man-in-the-middle attacks, data interception, or network outages for systems using iSCSI network storage.

Vendors: Open-Iscsi.

Quick answers

Is CVE-2026-115486 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-115486 being exploited in the wild.
How severe is CVE-2026-115486?: High severity, with a CVSS score of 7.1, published 23 October 2026.
Which products and versions are affected?: Open-Iscsi <UNKNOWN>.
Is there a fix for CVE-2026-115486?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-115486 attacked?: It is attacked from the adjacent network.
Am I affected by CVE-2026-115486?: Check whether you run Open-Iscsi at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The iscsiuio component accesses link-layer address options at a fixed offset without validating that the packet contains those options, and unconditionally updates the ARP table with attacker-controlled addresses from packet headers. An adjacent network attacker can exploit this by sending a minimal Neighbor Advertisement packet to poison ARP entries and redirect traffic. This is a CWE-119 buffer access issue combined with improper input validation.

Affected products

open-iscsi open-iscsi <UNKNOWN>

Timeline

2026-10-23: disclosed

References

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