Cisco Secure Email Gateway Relative Path Traversal Vulnerability
Critical · CVSS 9.8 CISA KEV
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.
Remediation
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).
Affected PHP branches
See the source advisory.
Source: CISA Known Exploited Vulnerabilities Catalog · retrieved 2026-10-22T10:19:14-04:00 · https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json