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-2026-76490 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787.
Published: 2026-10-21
Score: 8.6 High
EPSS: n/a
KEV: No
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Remediation

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History

Wed, 21 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
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-2026-76490 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787.
Title Cisco Expressway Series Software Hardening Release: October 2026 - Out-of-bounds Write Vulnerabilities
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-10-21T16:17:29.557Z

Reserved: 2026-08-19T12:02:03.640Z

Link: CVE-2026-76490

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-21T17:19:08.340

Modified: 2026-10-21T17:19:08.340

Link: CVE-2026-76490

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses