CVE-2026-115486 open-iscsi - ARP Poisoning

open-iscsi contains an ARP poisoning vulnerability caused by improper validation of IPv6 Neighbor Discovery handler and unconditional ARP table updates, letting attackers on the same network segment redirect traffic, exploit requires network access.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.21% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
ARP Poisoning
Impact
Man In The Middle
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
Published
23 October 2026
Updated
25 October 2026
Weakness
CWE-125

Vendor fix

Update to the latest version of open-iscsi.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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