Secure Email and Web
CVE-2026-76442: Cisco Secure Email Gateway Security Hardening Release
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Email Gateway and Cisco Secure Email and Web Manager engineering team has conducted a comprehensive internal security review.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Cisco Secure Email 14.0 | See the advisory |
| Cisco Secure Email 13.5 | See the advisory |
| Cisco Secure Email 13.0 | See the advisory |
| Cisco Secure Email 14.2 | See the advisory |
| Cisco Secure Email 13.0 | See the advisory |
| Cisco Secure Email 13.5 | See the advisory |
| Cisco Secure Email 14.2 | See the advisory |
| Cisco Secure Email 14.3 | See the advisory |
| Cisco Secure Email 15.0 | See the advisory |
| Cisco Secure Email 15.0 | See the advisory |
| Cisco Secure Email 15.5 | See the advisory |
| Cisco Secure Email 15.5 | See the advisory |
| Cisco Secure Email 15.5 | See the advisory |
| Cisco Secure Email 16.0 | See the advisory |
| Cisco Secure Email 15.0 | See the advisory |
| Cisco Secure Email 16.0 | See the advisory |
| Cisco Secure Email 15.5 | See the advisory |
| Cisco Secure Email 16.0 | See the advisory |
| Cisco Secure Email 15.5 | See the advisory |
| Cisco Secure Email 16.0 | See the advisory |
| Cisco Secure Email 15.0 | See the advisory |
| Cisco Secure Email 16.0 | See the advisory |
| Cisco Secure Email 16.0 | See the advisory |
| Cisco Secure Email 16.5 | See the advisory |
| Cisco Secure Email and Web Manager 13.6 | See the advisory |
| Cisco Secure Email and Web Manager 13.6 | See the advisory |
| Cisco Secure Email and Web Manager 13.0 | See the advisory |
| Cisco Secure Email and Web Manager 13.0 | See the advisory |
| Cisco Secure Email and Web Manager 13.8 | See the advisory |
| Cisco Secure Email and Web Manager 13.8 | See the advisory |
| Cisco Secure Email and Web Manager 13.8 | See the advisory |
| Cisco Secure Email and Web Manager 14.0 | See the advisory |
| Cisco Secure Email and Web Manager 12.8 | See the advisory |
| Cisco Secure Email and Web Manager 14.1 | See the advisory |
| Cisco Secure Email and Web Manager 13.6 | See the advisory |
| Cisco Secure Email and Web Manager 14.2 | See the advisory |
| Cisco Secure Email and Web Manager 14.2 | See the advisory |
| Cisco Secure Email and Web Manager 12.8 | See the advisory |
| Cisco Secure Email and Web Manager 13.8 | See the advisory |
| Cisco Secure Email and Web Manager 14.2 | See the advisory |
| Cisco Secure Email and Web Manager 14.3 | See the advisory |
| Cisco Secure Email and Web Manager 15.0 | See the advisory |
| Cisco Secure Email and Web Manager 15.5 | See the advisory |
| Cisco Secure Email and Web Manager 15.5 | See the advisory |
| Cisco Secure Email and Web Manager 15.5 | See the advisory |
| Cisco Secure Email and Web Manager 16.0 | See the advisory |
| Cisco Secure Email and Web Manager 15.5 | See the advisory |
| Cisco Secure Email and Web Manager 16.0 | See the advisory |
| Cisco Secure Email and Web Manager 15.0 | See the advisory |
| Cisco Secure Email and Web Manager 16.0 | See the advisory |
| Cisco Secure Email and Web Manager 15.5 | See the advisory |
| Cisco Secure Email and Web Manager 15.0 | See the advisory |
| Cisco Secure Email and Web Manager 16.0 | See the advisory |
| Cisco Secure Email and Web Manager 16.0 | See the advisory |
| Cisco Secure Email and Web Manager 16.5 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Email Gateway and Cisco Secure Email and Web Manager engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-76442 are related to issues with improper validation of specified quantity in input that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-1284.
Exploitation
Except as otherwise noted previously, the Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.