Exploitation evidence
Known exploited · CISA KEV listed
Added 2026-05-21. Ransomware campaign use: Unknown.
CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date: 2026-06-04. 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
Trend Micro, Inc. / TrendAI Apex One
Default status: Not specified
- affected: 2019 (14.0) to < 14.0.0.17079 (semver)
Trend Micro, Inc. / TrendAI Apex One as a Service
Default status: Not specified
- affected: SaaS to < 14.0.20731 (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": 0.1342,
"percentile": 0.96478
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.1342,
"percentile": 0.96456
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.1342,
"percentile": 0.96452
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.1342,
"percentile": 0.96451
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.1342,
"percentile": 0.96449
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.1342,
"percentile": 0.96444
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.1342,
"percentile": 0.9644
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.1342,
"percentile": 0.96437
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.1342,
"percentile": 0.9643
}03 Nov 2026, 12:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-34926",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-22T03:55:44.534070Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2026-05-21",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34926"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-22T12:47:07.213Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34926"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:trendmicro:apexone_op:14.0.0.17079:*:*:*:*:*:*:*"
],
"product": "TrendAI Apex One",
"vendor": "Trend Micro, Inc.",
"versions": [
{
"lessThan": "14.0.0.17079",
"status": "affected",
"version": "2019 (14.0)",
"versionType": "semver"
}
]
},
{
"cpes": [
"cpe:2.3:a:trendmicro:apexone_saas:14.0.0.20731:*:*:*:*:*:*:*"
],
"product": "TrendAI Apex One as a Service",
"vendor": "Trend Micro, Inc.",
"versions": [
{
"lessThan": "14.0.20731",
"status": "affected",
"version": "SaaS",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A directory traversal vulnerability in the Apex One (on-premise) server could allow a pre-authenticated local attacker to modify a key table on the server to inject malicious code to deploy to agents on affected installations.\n\n\r\nThis vulnerability is only exploitable on the on-premise version of Apex One and a potential attacker must have access to the Apex One Server and already obtained administrative credentials to the server via some other method to exploit this vulnerability."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-23",
"description": "CWE-23: Relative Path Traversal",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-21T13:03:21.164Z",
"orgId": "7f7bd7df-cffe-4fdb-ab6d-859363b89272",
"shortName": "trendmicro"
},
"references": [
{
"url": "https://success.trendmicro.com/en-US/solution/KA-0023430"
},
{
"url": "https://success.trendmicro.com/ja-JP/solution/KA-0022974"
},
{
"url": "https://jvn.jp/en/vu/JVNVU90583059/"
},
{
"url": "https://www.jpcert.or.jp/english/at/2026/at260014.html"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "7f7bd7df-cffe-4fdb-ab6d-859363b89272",
"assignerShortName": "trendmicro",
"cveId": "CVE-2026-34926",
"datePublished": "2026-05-21T13:03:21.164Z",
"dateReserved": "2026-03-31T17:22:13.504Z",
"dateUpdated": "2026-05-22T12:47:07.213Z",
"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": 0.1342,
"percentile": 0.96425
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2026-34926",
"cwes": [
"CWE-23"
],
"dateAdded": "2026-05-21",
"dueDate": "2026-06-04",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://success.trendmicro.com/en-US/solution/KA-0023430 ; https://nvd.nist.gov/vuln/detail/CVE-2026-34926",
"product": "Apex One",
"requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
"shortDescription": "Trend Micro Apex One (on-premise) contains a directory traversal vulnerability that could allow a pre-authenticated local attacker to modify a key table on the server to inject malicious code to deploy to agents on affected installations.",
"vendorProject": "Trend Micro",
"vulnerabilityName": "Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability"
}