Vulnerability in open-iscsi's iscsiuio Component Affects Network Traffic Routing
CVE-2026-115486

7.1HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
23 October 2026

What is CVE-2026-115486?

A flaw has been identified in the iscsiuio component of open-iscsi, where the IPv6 Neighbor Discovery handler improperly accesses link-layer address options at a fixed offset without validating their presence. This vulnerability allows an attacker on the same network segment to issue a crafted Neighbor Advertisement, potentially leading to ARP table poisoning. Consequently, malicious actors can redirect network traffic to unauthorized destinations, compromising data integrity and confidentiality.

References

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

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Tristan Madani (Talence Security) for reporting this issue.
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