CVE-2026-115486 (GCVE-0-2026-115486)
Vulnerability from cvelistv5
Published
2026-10-23 00:16
Modified
2026-10-26 14:30
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
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.
References
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
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{
"containers": {
"cna": {
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"cpes": [
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"packageName": "iscsi-initiator-utils",
"product": "Red Hat Enterprise Linux 10",
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},
{
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"cpes": [
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"product": "Red Hat Enterprise Linux 8",
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{
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"cpes": [
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],
"credits": [
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"lang": "en",
"value": "Red Hat would like to thank Tristan Madani (Talence Security) for reporting this issue."
}
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}
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"metrics": [
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"attackVector": "ADJACENT_NETWORK",
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"baseScore": 7.1,
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"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
"version": "3.1"
},
"format": "CVSS"
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],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-125",
"description": "Out-of-bounds Read",
"lang": "en",
"type": "CWE"
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"providerMetadata": {
"dateUpdated": "2026-10-26T14:30:55.948Z",
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"shortName": "redhat"
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"references": [
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"tags": [
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"url": "https://access.redhat.com/security/cve/CVE-2026-115486"
},
{
"name": "RHBZ#2556267",
"tags": [
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2556267"
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],
"timeline": [
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"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-10-20T00:00:00.000Z",
"value": "Made public."
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],
"title": "Open-iscsi: open-iscsi: ipv6 neighbor discovery missing option length validation in iscsiuio allows arp table poisoning",
"workarounds": [
{
"lang": "en",
"value": "Keep iscsiuio-managed interfaces on trusted L2 segments only. Where operationally acceptable, filter ICMPv6 Neighbor Advertisement (type 136) and Neighbor Solicitation (type 135) messages from untrusted sources using firewall rules."
}
],
"x_generator": {
"engine": "cvelib 1.8.0"
},
"x_redhatCweChain": "CWE-125: Out-of-bounds Read"
}
},
"cveMetadata": {
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"datePublished": "2026-10-23T00:16:34.250Z",
"dateReserved": "2026-10-22T15:15:31.504Z",
"dateUpdated": "2026-10-26T14:30:55.948Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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