CVE-2026-76442
Received Received - Intake

Improper Input Validation in Cisco Secure Email Gateway

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: Cisco Systems, Inc.

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-2026-76442 are related to issues with improper validation of specified quantity in input that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-1284.

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Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-09-14
AI Q&A
2026-09-14
EPSS Evaluated
N/A
NVD
CVE-2026-76442
EUVD
EUVD-2026-77626

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
cisco secure_email_gateway *
cisco secure_email_and_web_manager *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-1284 The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

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Executive Summary

CVE-2026-76442 is a vulnerability in Cisco Secure Email Gateway and Cisco Secure Email and Web Manager. It involves improper validation of specified quantity in input, which falls under CWE-1284. This means the software fails to correctly verify or sanitize input data, potentially allowing unexpected behavior or exploitation.

Detection Guidance

The provided CVE data does not include specific detection methods or commands for identifying CVE-2026-76442 on a network or system. The vulnerability is related to improper input validation (CWE-1284) in Cisco Secure Email Gateway and Cisco Secure Email and Web Manager.

Impact Analysis

This vulnerability could lead to denial-of-service conditions due to its impact on availability (A:H in CVSS). Attackers might exploit it to cause the affected systems to crash or become unresponsive, disrupting email and web management services.

Compliance Impact

The vulnerability involves improper validation of input quantities, which could lead to denial-of-service conditions. This may impact compliance by disrupting data availability, a key requirement under GDPR and HIPAA, potentially leading to violations if systems fail to maintain required access to personal or health data.

Mitigation Strategies

Apply the latest security updates or hardening releases from Cisco for Secure Email Gateway and Secure Email and Web Manager as they address the identified vulnerabilities.

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