Exploitation evidence
Known exploited · CISA KEV listed
Added 2026-10-14. 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: 2026-10-17. 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
Cisco / Cisco Secure Email
Default status: unknown
- affected: 14.0.0-698
- affected: 13.5.1-277
- affected: 13.0.0-392
- affected: 14.2.0-620
- affected: 13.0.5-007
- affected: 13.5.4-038
- affected: 14.2.1-020
- affected: 14.3.0-032
- affected: 15.0.0-104
- affected: 15.0.1-030
- affected: 15.5.0-048
- affected: 15.5.1-055
- affected: 15.5.2-018
- affected: 16.0.0-050
- affected: 15.0.3-002
- affected: 16.0.0-054
- affected: 15.5.3-022
- affected: 16.0.1-017
- affected: 15.5.4-012
- affected: 16.0.4-016
- affected: 15.0.5-016
- affected: 16.0.2-112
- affected: 16.0.3-044
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
CVE Program record ↗ · Download tracked evidence as JSON
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-afw-zqYJkjxp
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76519
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": 0.06227,
"percentile": 0.93633
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.06227,
"percentile": 0.93593
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.06227,
"percentile": 0.93584
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.06227,
"percentile": 0.93581
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.06227,
"percentile": 0.93578
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.06227,
"percentile": 0.9357
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.02152,
"percentile": 0.82212
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.02152,
"percentile": 0.82201
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.02152,
"percentile": 0.82169
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.02152,
"percentile": 0.82149
}03 Nov 2026, 02:22 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-76519",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-14T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2026-10-14",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76519"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-15T03:56:57.762Z",
"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-2026-76519"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-10-14T00:00:00.000Z",
"value": "CVE-2026-76519 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Secure Email",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "14.0.0-698"
},
{
"status": "affected",
"version": "13.5.1-277"
},
{
"status": "affected",
"version": "13.0.0-392"
},
{
"status": "affected",
"version": "14.2.0-620"
},
{
"status": "affected",
"version": "13.0.5-007"
},
{
"status": "affected",
"version": "13.5.4-038"
},
{
"status": "affected",
"version": "14.2.1-020"
},
{
"status": "affected",
"version": "14.3.0-032"
},
{
"status": "affected",
"version": "15.0.0-104"
},
{
"status": "affected",
"version": "15.0.1-030"
},
{
"status": "affected",
"version": "15.5.0-048"
},
{
"status": "affected",
"version": "15.5.1-055"
},
{
"status": "affected",
"version": "15.5.2-018"
},
{
"status": "affected",
"version": "16.0.0-050"
},
{
"status": "affected",
"version": "15.0.3-002"
},
{
"status": "affected",
"version": "16.0.0-054"
},
{
"status": "affected",
"version": "15.5.3-022"
},
{
"status": "affected",
"version": "16.0.1-017"
},
{
"status": "affected",
"version": "15.5.4-012"
},
{
"status": "affected",
"version": "16.0.4-016"
},
{
"status": "affected",
"version": "15.0.5-016"
},
{
"status": "affected",
"version": "16.0.2-112"
},
{
"status": "affected",
"version": "16.0.3-044"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the Advanced Malware Protection (AMP) feature of Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system.\r\n\r\nThis vulnerability is due to improper handling of email attachments when the file reputation service is enabled. An attacker could exploit this vulnerability by sending an email that contains a crafted attachment through an affected device. A successful exploit could allow the attacker to write arbitrary files and execute commands with root privileges on the underlying operating system."
}
],
"exploits": [
{
"lang": "en",
"value": "In October 2026, the Cisco PSIRT became aware of active exploitation of this vulnerability."
}
],
"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",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-23",
"description": "Relative Path Traversal",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-14T16:07:51.466Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-esa-afw-zqYJkjxp",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-afw-zqYJkjxp"
}
],
"source": {
"advisory": "cisco-sa-esa-afw-zqYJkjxp",
"defects": [
"CSCwu56223"
],
"discovery": "INTERNAL"
},
"title": "Cisco Secure Email Gateway Arbitrary File Write Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-76519",
"datePublished": "2026-10-14T16:07:51.466Z",
"dateReserved": "2026-08-19T12:02:03.642Z",
"dateUpdated": "2026-10-15T03:56:57.762Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2026-76519",
"cwes": [
"CWE-23"
],
"dateAdded": "2026-10-14",
"dueDate": "2026-10-17",
"forensicTriage": "Yes",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-afw-zqYJkjxp ; ; 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-2026-76519",
"product": "Secure Email Gateway",
"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": "Cisco Secure Email Gateway contains a relative path traversal vulnerability that could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system.",
"vendorProject": "Cisco",
"vulnerabilityName": "Cisco Secure Email Gateway Relative Path Traversal Vulnerability"
}