{"cvss":9.8,"datePublished":"2026-10-14","dateUpdated":"2026-10-14","description":"Cisco Secure Email Gateway Relative Path Traversal Vulnerability | Affected: Cisco / Secure Email Gateway | Description: 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. | 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. | Due date: 2026-10-17 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): 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","dueDate":"2026-10-17","exploited":true,"id":"CVE-2026-76519","kev_catalogs":["circl"],"knownRansomwareCampaignUse":"Unknown","product":"Secure Email Gateway","severity":"CRITICAL","source":"circl_kev","title":"Cisco Secure Email Gateway Relative Path Traversal Vulnerability","vendor":"Cisco"}