Cisco Secure Email Gateway Relative Path Traversal Vulnerability
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.
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
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- Cisco
- Product
- Secure Email Gateway
- CVSS
- 9.8
- EPSS
- 0.022 (p82)
- CISA KEV
- added 14 Oct 2026, due 17 Oct 2026 (15d overdue)
- Exploitation
- observed in the wild
- Fix
- available
- Weakness
- CWE-23
- Exposure class
Why it ranks 93 (Critical)
- CISA KEV listed, remediation due 2026-10-17
- CVSS 9.8 critical
- Exposed product class: email
- Widely deployed vendor product (Cisco)
- Covered by 6 independent sources
- Fix available
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- Vendor advisory (sec.cloudapps.cisco.com)
- CVE-2026-76519 on this site · NVD · CVE.org · Vulnpedia · KEV
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