WATCHExploited vulnerability
Cisco Secure Email Gateway
Cisco Secure Email Gateway Relative Path Traversal Vulnerability
What's happening and what to do
An unauthenticated remote attacker can write arbitrary files onto the underlying operating system, and this flaw is being actively exploited. Cisco Secure Email Gateway. Apply the vendor's mitigations or update now, and check for signs of compromise.
AI summary of the sources on this page. Regenerated when a source changes.
Signals over time
- 2026-10-14Added to CISA's Known Exploited Vulnerabilities catalog.
- 2026-10-17Federal patch deadline for US agencies.
- 2026-11-03 21:55First seen here.
Source text
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.