CVE-2026-76440

PUBLISHED
Published: 14 Sept 2026, 16:08
Last modified:14 Sept 2026, 16:08

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (cve.org)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

14 Sept 2026, 16:08
Published
Vulnerability first disclosed

Description

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-2026-76440 are related to path traversal issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-23.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Techniques & Countermeasures

  • CWE-23•Relative Path Traversal

    The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.

Affected Systems

  • cisco•cisco secure email

    14.0.0-698 | 13.5.1-277 | 13.0.0-392 | 14.2.0-620 | 13.0.5-007 | 13.5.4-038 | 14.2.1-020 | 14.3.0-032 | 15.0.0-104 | 15.0.1-030 | 15.5.0-048 | 15.5.1-055 | 15.5.2-018 | 16.0.0-050 | 15.0.3-002 | 16.0.0-054 | 15.5.3-022 | 16.0.1-017 | 15.5.4-012 | 16.0.4-016 | 15.0.5-016 | 16.0.2-112 | 16.0.3-044 | 15.5.5-014

  • cisco•cisco secure email and web manager

    13.6.2-023 | 13.6.2-078 | 13.0.0-249 | 13.0.0-277 | 13.8.1-052 | 13.8.1-068 | 13.8.1-074 | 14.0.0-404 | 12.8.1-002 | 14.1.0-227 | 13.6.1-201 | 14.2.0-203 | 14.2.0-212 | 12.8.1-021 | 13.8.1-108 | 14.2.0-224 | 14.3.0-120 | 15.0.0-334 | 15.5.1-024 | 15.5.1-029 | 15.5.2-005 | 16.0.0-195 | 15.5.3-017 | 16.0.1-010 | 15.0.1-035 | 16.0.2-088 | 15.5.4-007 | 15.0.2-007 | 16.0.4-010 | 16.0.3-016 | 16.5.0-429 | 15.5.5-006

References (1)