Exploitation evidence
Known exploited · CISA KEV listed
Added 2026-10-01. 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: 2026-10-04. 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
Fortinet / FortiMail
Default status: unaffected
- affected: 8.0.0 to ≤ 8.0.1 (semver)
- affected: 7.6.0 to ≤ 7.6.6 (semver)
- affected: 7.4.0 to ≤ 7.4.8 (semver)
- affected: 7.2.0 to ≤ 7.2.9 (semver)
- affected: 7.0.0 to ≤ 7.0.9 (semver)
Fixes and workarounds
Upgrade to FortiMail version 8.0.2 or above Upgrade to FortiMail version 7.6.7 or above Upgrade to FortiMail version 7.4.9 or above Upgrade to upcoming FortiMail version 7.2.10 or above
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": 0.04573,
"percentile": 0.91744
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.04573,
"percentile": 0.91694
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.04573,
"percentile": 0.91683
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.04573,
"percentile": 0.91679
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.04573,
"percentile": 0.91674
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.04573,
"percentile": 0.91661
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.04573,
"percentile": 0.91653
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.04573,
"percentile": 0.91647
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.04573,
"percentile": 0.91631
}03 Nov 2026, 12:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-104286",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-02T03:55:37.976071Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2026-10-01",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-104286"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-07T17:59:34.842Z",
"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-2026-104286"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:fortinet:fortimail:8.0.1:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:8.0.0:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.6.6:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.6.5:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.6.4:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.6.3:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.6.2:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.6.1:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.6.0:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.4.8:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.4.7:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.4.6:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.4.5:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.4.4:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.4.3:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.4.2:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.4.1:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.4.0:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.2.9:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.2.8:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.2.7:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.2.6:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.2.5:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.2.4:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.2.3:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.2.2:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.2.1:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.2.0:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.0.9:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.0.8:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.0.7:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.0.6:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.0.5:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.0.4:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.0.3:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.0.2:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.0.1:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortimail:7.0.0:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"product": "FortiMail",
"vendor": "Fortinet",
"versions": [
{
"lessThanOrEqual": "8.0.1",
"status": "affected",
"version": "8.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.6.6",
"status": "affected",
"version": "7.6.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.4.8",
"status": "affected",
"version": "7.4.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.9",
"status": "affected",
"version": "7.2.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.9",
"status": "affected",
"version": "7.0.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "An improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2.0 through 7.2.9, FortiMail 7.0 all versions may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "Execute unauthorized code or commands",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-28T17:10:14.979Z",
"orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
"shortName": "fortinet"
},
"references": [
{
"name": "https://fortiguard.fortinet.com/psirt/FG-IR-26-175",
"url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-175"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to FortiMail version 8.0.2 or above\nUpgrade to FortiMail version 7.6.7 or above\nUpgrade to FortiMail version 7.4.9 or above\nUpgrade to upcoming FortiMail version 7.2.10 or above"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
"assignerShortName": "fortinet",
"cveId": "CVE-2026-104286",
"datePublished": "2026-10-01T19:17:38.938Z",
"dateReserved": "2026-10-01T19:12:54.081Z",
"dateUpdated": "2026-10-28T17:10:14.979Z",
"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": 0.04573,
"percentile": 0.9162
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2026-104286",
"cwes": [
"CWE-22",
"CWE-158"
],
"dateAdded": "2026-10-01",
"dueDate": "2026-10-04",
"forensicTriage": "Yes",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://fortiguard.fortinet.com/psirt/FG-IR-26-175 ; ; 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-2026-104286",
"product": "FortiMail",
"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": "Fortinet FortiMail contains a path traversal and an improper neutralization of NULL byte or NULL character vulnerability that may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests.",
"vendorProject": "Fortinet",
"vulnerabilityName": "Fortinet FortiMail Path Traversal Vulnerability"
}