CVE-2026-76440 Cisco Secure Email Gateway & Secure Email and Web Manager - Path Traversal

Cisco Secure Email Gateway and Cisco Secure Email and Web Manager contain path traversal vulnerabilities caused by improper input validation, letting attackers access unauthorized files, exploit requires crafted requests.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.62% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Path Traversal
Impact
File System Read, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
14 September 2026
Updated
15 October 2026
Weakness
CWE-23

Vendor fix

Update to the latest software hardening release provided by Cisco.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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