Exploitation evidence
Not listed in the latest downloaded CISA KEV catalog. This does not establish an absence of exploitation.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Insyde Software / InsydeH2O
Default status: unaffected
- affected: See in the Solution
Fixes and workarounds
HP feature version – Platform 5.4: 05.47.2701.2631 – Platform 5.5: 05.55.45.2630 – Platform 5.6: 05.62.29.2630 – Platform 5.7: 05.72.21.2630 – Platform 6.0: 06.01.23.2630
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
Monitored source mentions
Shared CVE identifiers link source mentions; they do not establish that the reports describe the same incident.
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.00184,
"percentile": 0.08078
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.00184,
"percentile": 0.08061
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.00184,
"percentile": 0.08031
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.00184,
"percentile": 0.08036
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.00184,
"percentile": 0.08043
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.00184,
"percentile": 0.08056
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.00184,
"percentile": 0.08078
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.00184,
"percentile": 0.08078
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.00184,
"percentile": 0.08055
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.00184,
"percentile": 0.08002
}03 Nov 2026, 02:22 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-12855",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-09T15:54:34.074995Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-09T20:51:33.091Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2026-10-01T15:08:22.356Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "https://www.kb.cert.org/vuls/id/553437"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"x86"
],
"product": "InsydeH2O",
"vendor": "Insyde Software",
"versions": [
{
"status": "affected",
"version": "See in the Solution"
}
]
}
],
"datePublic": "2026-09-09T03:56:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Unvalidated memory boundary could result in arbitrary code execution. The vulnerability exists in the code developed specifically for HP projects."
}
],
"value": "Unvalidated memory boundary could result in arbitrary code execution. The vulnerability exists in the code developed specifically for HP projects."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
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]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-20",
"description": "CWE-20: Improper Input Validation",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-09T03:59:11.348Z",
"orgId": "8338d8cb-57f7-4252-abc0-96fd13e98d21",
"shortName": "Insyde"
},
"references": [
{
"url": "https://www.insyde.com/security-pledge/sa-2026009/"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "HP feature version<br>– Platform 5.4: 05.47.2701.2631<br>– Platform 5.5: 05.55.45.2630<br>– Platform 5.6: 05.62.29.2630<br>– Platform 5.7: 05.72.21.2630<br>– Platform 6.0: 06.01.23.2630"
}
],
"value": "HP feature version\n– Platform 5.4: 05.47.2701.2631\n– Platform 5.5: 05.55.45.2630\n– Platform 5.6: 05.62.29.2630\n– Platform 5.7: 05.72.21.2630\n– Platform 6.0: 06.01.23.2630"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "H19WMIHandlerSmm: unvalidated memory boundary could result in arbitrary code execution.",
"x_generator": {
"engine": "Vulnogram 1.0.5"
}
}
},
"cveMetadata": {
"assignerOrgId": "8338d8cb-57f7-4252-abc0-96fd13e98d21",
"assignerShortName": "Insyde",
"cveId": "CVE-2026-12855",
"datePublished": "2026-09-09T03:59:11.348Z",
"dateReserved": "2026-06-22T05:49:02.853Z",
"dateUpdated": "2026-10-01T15:08:22.356Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}