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CVE-2026-115486VulnerabilityPublished

Microsoft · Open-iscsi: open-iscsi: ipv6 neighbor discovery missing option length validation in iscsiuio allows arp table poisoning

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-115486· High 7.1

Not known to be exploited · CVSS 7.1 High.

Data as of 29 Oct 2026, 10:37 UTC

CVSS 3.1 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.17.1
EPSS
0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10iscsi-initiator-utilsAffected–Fixed in–
Red Hat Enterprise Linux 6iscsi-initiator-utilsAffected–Fixed in–
Red Hat Enterprise Linux 7iscsi-initiator-utilsAffected–Fixed in–
Red Hat Enterprise Linux 8iscsi-initiator-utilsAffected–Fixed in–
Red Hat Enterprise Linux 9iscsi-initiator-utilsAffected–Fixed in–

AI-suggested

Users should monitor official Microsoft Security Response Center advisories for updates and apply any forthcoming fixes promptly.

Description

A vulnerability in open-iscsi version 3.0 involves missing option length validation in IPv6 neighbor discovery within the iscsiuio component, which can allow ARP table poisoning.

References

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