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CVE-2026-76443: Improper Neutralization in Cisco Cisco Secure Email

0
Critical
VulnerabilityCVE-2026-76443cvecve-2026-76443
Published: 09/14/2026 (09/14/2026, 16:08:59 UTC)
Source: CVE Database V5
Vendor/Project: Cisco
Product: Cisco Secure Email

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-2026-76443 are related to issues with improper neutralization that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-707.

CVSS v3.1

Score 9.8critical

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

Cisco

Cisco Secure Email

Affected versions
=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

Cisco

Cisco Secure Email and Web Manager

Affected versions
=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

Technical Details

Data Version
5.2
Assigner Short Name
cisco
Date Reserved
2026-08-19T12:02:03.635Z
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6aa81e7d55bf5e2cf54cc390

Added to database: 09/14/2026, 16:19:09 UTC

Last updated: 09/14/2026, 16:19:09 UTC

Views: 1

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