High
open-iscsi — security advisory
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.
- Products
- open-iscsi
- Affected versions
- 2.1.10-1, 2.1.10-2, 2.1.10-3, 2.1.11-1, 2.1.11-1+deb13u1, 2.1.11-1+deb13u2, 2.1.11-2, 2.1.11-3, 2.1.11-4, 2.1.11-5, 2.1.11-6, 2.1.12-1, 2.1.12-2, 2.1.13-1, 2.1.8-1, 2.1.8-1+deb12u1, 2.1.8-2, 2.1.9-1, 2.1.9-2, 2.1.9-3, 2.1.9-4
- Fixed versions
- Not specified
- CVEs
- CVE-2026-115486
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:03 UTC · Revision 1
Source evidence
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.
osv:DEBIAN-CVE-2026-115486
open-iscsi
Fixed versions: Not specified
open-iscsi
Fixed versions: Not specified
open-iscsi
Fixed versions: Not specified
Complete source record
{
"id": "0e6aea9d27e3553726455739b980f3e6b7158cc1bc2929252adf1317e7f3c129",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-115486",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-115486",
"summary": "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.",
"evidence": "osv:DEBIAN-CVE-2026-115486",
"products": [
{
"name": {
"value": "open-iscsi",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.1.10-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.10-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.10-3",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.11-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.11-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.11-3",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.11-4",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.11-5",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.11-6",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.12-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.12-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.13-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.8-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.8-1+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.8-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.9-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.9-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.9-3",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.9-4",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "open-iscsi",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.1.11-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.1.11-1+deb13u1",
"evidence": "/affected/1/versions"
},
{
"value": "2.1.11-1+deb13u2",
"evidence": "/affected/1/versions"
},
{
"value": "2.1.11-2",
"evidence": "/affected/1/versions"
},
{
"value": "2.1.11-3",
"evidence": "/affected/1/versions"
},
{
"value": "2.1.11-4",
"evidence": "/affected/1/versions"
},
{
"value": "2.1.11-5",
"evidence": "/affected/1/versions"
},
{
"value": "2.1.11-6",
"evidence": "/affected/1/versions"
},
{
"value": "2.1.12-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.1.12-2",
"evidence": "/affected/1/versions"
},
{
"value": "2.1.13-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "open-iscsi",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.1.11-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.11-2",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.11-3",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.11-4",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.11-5",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.11-6",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.12-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.12-2",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.13-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-115486",
"aliases": [
"DEBIAN-CVE-2026-115486"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "open-iscsi",
"purl": "pkg:deb/debian/open-iscsi?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.1.10-1",
"2.1.10-2",
"2.1.10-3",
"2.1.11-1",
"2.1.11-2",
"2.1.11-3",
"2.1.11-4",
"2.1.11-5",
"2.1.11-6",
"2.1.12-1",
"2.1.12-2",
"2.1.13-1",
"2.1.8-1",
"2.1.8-1+deb12u1",
"2.1.8-2",
"2.1.9-1",
"2.1.9-2",
"2.1.9-3",
"2.1.9-4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-115486.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "open-iscsi",
"purl": "pkg:deb/debian/open-iscsi?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.1.11-1",
"2.1.11-1+deb13u1",
"2.1.11-1+deb13u2",
"2.1.11-2",
"2.1.11-3",
"2.1.11-4",
"2.1.11-5",
"2.1.11-6",
"2.1.12-1",
"2.1.12-2",
"2.1.13-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-115486.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "open-iscsi",
"purl": "pkg:deb/debian/open-iscsi?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.1.11-1",
"2.1.11-2",
"2.1.11-3",
"2.1.11-4",
"2.1.11-5",
"2.1.11-6",
"2.1.12-1",
"2.1.12-2",
"2.1.13-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-115486.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-24T09:47:23.396751270Z",
"provider": "osv",
"upstream": [
"CVE-2026-115486"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-115486"
]
},
"related_cves": [
{
"value": "CVE-2026-115486",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 428934,
"published_at": "2026-10-23T01:16:53.943+00:00"
}