Exploitation evidence
Known exploited · CISA KEV listed
Added 2026-06-23. Ransomware campaign use: Unknown.
CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA due date: 2026-06-26. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Ubiquiti Inc / UniFi OS Server
Default status: unaffected
- affected: 0 to < 5.0.8 (semver)
Ubiquiti Inc / Express
Default status: unaffected
- affected: 0 to < 4.0.14 (semver)
Ubiquiti Inc / UDM
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UDM-Pro
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UDM-SE
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UDM-Pro-Max
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UDM-Beast
Default status: unaffected
- affected: 0 to < 5.1.11 (semver)
Ubiquiti Inc / EFG
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UDW
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UDR
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UDR7
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UDR-5G
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / Express 7
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UNVR
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UNVR-Pro
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UNVR-Instant
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UNVR-G2
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UNVR-G2-Pro
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / ENVR
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / ENVR-Core
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UNAS-2
Default status: unaffected
- affected: 0 to < 5.1.10 (semver)
Ubiquiti Inc / UNAS-4
Default status: unaffected
- affected: 0 to < 5.1.10 (semver)
Ubiquiti Inc / UNAS-Pro
Default status: unaffected
- affected: 0 to < 5.1.10 (semver)
Ubiquiti Inc / UNAS-Pro-4
Default status: unaffected
- affected: 0 to < 5.1.10 (semver)
Ubiquiti Inc / UNAS-Pro-8
Default status: unaffected
- affected: 0 to < 5.1.10 (semver)
Ubiquiti Inc / UCKP
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UCK
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UCK-Enterprise
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UCG-Ultra
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UCG-Max
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UCG-Fiber
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Ubiquiti Inc / UCG-Industrial
Default status: unaffected
- affected: 0 to < 5.1.12 (semver)
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
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": 0.69235,
"percentile": 0.99366
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.69235,
"percentile": 0.99362
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.69235,
"percentile": 0.99361
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.69235,
"percentile": 0.99361
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.69235,
"percentile": 0.9936
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.69235,
"percentile": 0.9936
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.69235,
"percentile": 0.99359
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.69235,
"percentile": 0.99359
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.68033,
"percentile": 0.99325
}03 Nov 2026, 12:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-34909",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-23T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
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],
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},
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],
"url": "https://www.pwndefend.com/2026/06/09/cve-2026-34910-exploitation-itw-building-a-botnet-mirai/"
},
{
"tags": [
"government-resource"
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],
"timeline": [
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"time": "2026-06-23T00:00:00.000Z",
"value": "CVE-2026-34909 added to CISA KEV"
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],
"title": "CISA ADP Vulnrichment"
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],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "UniFi OS Server",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.0.8",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Express",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "4.0.14",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UDM",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
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},
{
"defaultStatus": "unaffected",
"product": "UDM-Pro",
"vendor": "Ubiquiti Inc",
"versions": [
{
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"status": "affected",
"version": "0",
"versionType": "semver"
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},
{
"defaultStatus": "unaffected",
"product": "UDM-SE",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UDM-Pro-Max",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UDM-Beast",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.11",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "EFG",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UDW",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UDR",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UDR7",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UDR-5G",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Express 7",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UNVR",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UNVR-Pro",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UNVR-Instant",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UNVR-G2",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UNVR-G2-Pro",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "ENVR",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "ENVR-Core",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UNAS-2",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.10",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UNAS-4",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.10",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UNAS-Pro",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.10",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UNAS-Pro-4",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.10",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UNAS-Pro-8",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.10",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UCKP",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UCK",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UCK-Enterprise",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UCG-Ultra",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UCG-Max",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UCG-Fiber",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "UCG-Industrial",
"vendor": "Ubiquiti Inc",
"versions": [
{
"lessThan": "5.1.12",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be manipulated to access an underlying account."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 10,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22 Path Traversal",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-22T20:19:51.649Z",
"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
"shortName": "hackerone"
},
"references": [
{
"url": "https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
"assignerShortName": "hackerone",
"cveId": "CVE-2026-34909",
"datePublished": "2026-05-22T00:43:49.072Z",
"dateReserved": "2026-03-31T15:00:06.521Z",
"dateUpdated": "2026-06-24T03:56:19.760Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.68033,
"percentile": 0.99324
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2026-34909",
"cwes": [
"CWE-22"
],
"dateAdded": "2026-06-23",
"dueDate": "2026-06-26",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-34909",
"product": "UniFi OS",
"requiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
"shortDescription": "Ubiquiti UniFi OS contains a path traversal vulnerability which could allow a malicious actor with access to the network to access files on the underlying system that could be manipulated to access an underlying account.",
"vendorProject": "Ubiquiti",
"vulnerabilityName": "Ubiquiti UniFi OS Path Traversal Vulnerability"
}