CVE-2026-76497
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Insecure Temporary File Handling in Cisco Expressway Series

Publication date: 2026-10-21

Last updated on: 2026-11-07

Assigner: Cisco Systems, Inc.

Description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software 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-2026-76497 are related to issues concerning insecure temporary files that are grouped under the Common Weakness Enumeration (CWE) Base CWE-377.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-10-21
Last Modified
2026-11-07
Generated
2026-11-10
AI Q&A
2026-10-22
EPSS Evaluated
2026-11-09
NVD
CVE-2026-76497
EUVD
EUVD-2026-107360

Affected Vendors & Products

Showing 94 associated CPEs
Vendor Product Version / Range
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.11.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.6
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.11.3
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.2.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.8.3
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.11.0
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.5.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.1.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.9
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.5.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.5.6
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.7.3
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.6.0
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.11.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.5
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.9.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.10.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.8.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.5.3
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.9.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.11.4
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.5.4
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.8.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.2.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.5.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.6.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.1.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.8
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.10.0
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.5.3
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.10.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.5.7
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.10.3
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.7.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.5.8
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.7
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.5.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.5.9
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.5.0
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.10.4
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.7.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.5.5
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.6.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.6.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.6.3
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.6.4
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.7.0
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X12.7.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.0.0
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.0.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.0.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.0.3
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.0.4
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.0.5
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.0.6
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.0.7
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.0.8
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.2.0
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.0.9
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.2.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.2.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.0.11
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.2.5
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.0.10
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.2.6
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.2.7
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.3.0
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.3.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.3.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.3.3
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.0.0
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.3.4
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.3.5
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.0.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.0.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.0.3
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.3.6
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.2.0
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.2.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.2.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.2.3
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X14.3.7
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.2.4.
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.2.4
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.3.0
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.3.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.3.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.4.0
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.5.0
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.5.1
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.5.2
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X15.5.3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-377 Creating and using insecure temporary files can leave application and system data vulnerable to attack.

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Executive Summary

CVE-2026-76497 involves insecure temporary files in Cisco Expressway Series software. This vulnerability is classified under CWE-377, which deals with insecure temporary file handling. The issue was discovered during Cisco's internal security review and addressed in software hardening releases.

Impact Analysis

This vulnerability could allow attackers to manipulate temporary files, potentially leading to unauthorized access, data tampering, or denial of service. The CVSS score of 6.6 indicates a medium severity risk with potential impacts on integrity and availability.

Mitigation Strategies

Apply the latest security patches or updates provided by Cisco for the Expressway Series software to address insecure temporary file issues.

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