CVE-2026-76492 - Vulnerability Details

- Cisco Expressway Series Software Hardening Release: October 2026 - NULL Pointer Vulnerabilities

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-2026-76492 are related to issues concerning null pointers that are grouped under the Common Weakness Enumeration (CWE) Base CWE-476.

Published: 2026-10-21

Score: 7.5 High

EPSS: n/a

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Cisco

Cisco TelePresence Video Communication Server (VCS) Expressway

unknown

Version	Status	Constraints
`X8.11.2`	affected	—
`X8.6`	affected	—
`X8.11.3`	affected	—
`X8.2.2`	affected	—
`X8.8.3`	affected	—
`X8.11.0`	affected	—
`X12.5.2`	affected	—
`X8.1.1`	affected	—
`X8.9`	affected	—
`X12.5.1`	affected	—
`X12.5.6`	affected	—
`X8.7.3`	affected	—
`X12.6.0`	affected	—
`X8.11.1`	affected	—
`X8.5`	affected	—
`X8.9.1`	affected	—
`X8.10.2`	affected	—
`X8.8.2`	affected	—
`X8.5.3`	affected	—
`X8.1`	affected	—
`X8.9.2`	affected	—
`X8.11.4`	affected	—
`X12.5.4`	affected	—
`X8.8.1`	affected	—
`X8.2.1`	affected	—
`X8.5.1`	affected	—
`X8.6.1`	affected	—
`X8.1.2`	affected	—
`X8.8`	affected	—
`X8.10.0`	affected	—
`X12.5.3`	affected	—
`X8.10.1`	affected	—
`X12.5.7`	affected	—
`X8.10.3`	affected	—
`X8.7.1`	affected	—
`X8.2`	affected	—
`X12.5.8`	affected	—
`X8.7`	affected	—
`X8.5.2`	affected	—
`X12.5.9`	affected	—
`X12.5.0`	affected	—
`X8.10.4`	affected	—
`X8.7.2`	affected	—
`X12.5.5`	affected	—
`X12.6.1`	affected	—
`X12.6.2`	affected	—
`X12.6.3`	affected	—
`X12.6.4`	affected	—
`X12.7.0`	affected	—
`X12.7.1`	affected	—
`X14.0.0`	affected	—
`X14.0.1`	affected	—
`X14.0.2`	affected	—
`X14.0.3`	affected	—
`X14.0.4`	affected	—
`X14.0.5`	affected	—
`X14.0.6`	affected	—
`X14.0.7`	affected	—
`X14.0.8`	affected	—
`X14.2.0`	affected	—
`X14.0.9`	affected	—
`X14.2.1`	affected	—
`X14.2.2`	affected	—
`X14.0.11`	affected	—
`X14.2.5`	affected	—
`X14.0.10`	affected	—
`X14.2.6`	affected	—
`X14.2.7`	affected	—
`X14.3.0`	affected	—
`X14.3.1`	affected	—
`X14.3.2`	affected	—
`X14.3.3`	affected	—
`X15.0.0`	affected	—
`X14.3.4`	affected	—
`X14.3.5`	affected	—
`X15.0.1`	affected	—
`X15.0.2`	affected	—
`X15.0.3`	affected	—
`X14.3.6`	affected	—
`X15.2.0`	affected	—
`X15.2.1`	affected	—
`X15.2.2`	affected	—
`X15.2.3`	affected	—
`X14.3.7`	affected	—
`X15.2.4.`	affected	—
`X15.2.4`	affected	—
`X15.3.0`	affected	—
`X15.3.1`	affected	—
`X15.3.2`	affected	—
`X15.4.0`	affected	—
`X15.5.0`	affected	—
`X15.5.1`	affected	—
`X15.5.2`	affected	—
`X15.5.3`	affected	—

No data.

Vendor Product Confidence Versions

Cisco

Expressway Series

100%

Version	Status	Scheme	Platform
`[X8.11.2,X8.11.2]`	affected	generic	—
`[X8.6,X8.6]`	affected	generic	—
`[X8.11.3,X8.11.3]`	affected	generic	—
`[X8.2.2,X8.2.2]`	affected	generic	—
`[X8.8.3,X8.8.3]`	affected	generic	—
`[X8.11.0,X8.11.0]`	affected	generic	—
`[X12.5.2,X12.5.2]`	affected	generic	—
`[X8.1.1,X8.1.1]`	affected	generic	—
`[X8.9,X8.9]`	affected	generic	—
`[X12.5.1,X12.5.1]`	affected	generic	—
`[X12.5.6,X12.5.6]`	affected	generic	—
`[X8.7.3,X8.7.3]`	affected	generic	—
`[X12.6.0,X12.6.0]`	affected	generic	—
`[X8.11.1,X8.11.1]`	affected	generic	—
`[X8.5,X8.5]`	affected	generic	—
`[X8.9.1,X8.9.1]`	affected	generic	—
`[X8.10.2,X8.10.2]`	affected	generic	—
`[X8.8.2,X8.8.2]`	affected	generic	—
`[X8.5.3,X8.5.3]`	affected	generic	—
`[X8.1,X8.1]`	affected	generic	—
`[X8.9.2,X8.9.2]`	affected	generic	—
`[X8.11.4,X8.11.4]`	affected	generic	—
`[X12.5.4,X12.5.4]`	affected	generic	—
`[X8.8.1,X8.8.1]`	affected	generic	—
`[X8.2.1,X8.2.1]`	affected	generic	—
`[X8.5.1,X8.5.1]`	affected	generic	—
`[X8.6.1,X8.6.1]`	affected	generic	—
`[X8.1.2,X8.1.2]`	affected	generic	—
`[X8.8,X8.8]`	affected	generic	—
`[X8.10.0,X8.10.0]`	affected	generic	—
`[X12.5.3,X12.5.3]`	affected	generic	—
`[X8.10.1,X8.10.1]`	affected	generic	—
`[X12.5.7,X12.5.7]`	affected	generic	—
`[X8.10.3,X8.10.3]`	affected	generic	—
`[X8.7.1,X8.7.1]`	affected	generic	—
`[X8.2,X8.2]`	affected	generic	—
`[X12.5.8,X12.5.8]`	affected	generic	—
`[X8.7,X8.7]`	affected	generic	—
`[X8.5.2,X8.5.2]`	affected	generic	—
`[X12.5.9,X12.5.9]`	affected	generic	—
`[X12.5.0,X12.5.0]`	affected	generic	—
`[X8.10.4,X8.10.4]`	affected	generic	—
`[X8.7.2,X8.7.2]`	affected	generic	—
`[X12.5.5,X12.5.5]`	affected	generic	—
`[X12.6.1,X12.6.1]`	affected	generic	—
`[X12.6.2,X12.6.2]`	affected	generic	—
`[X12.6.3,X12.6.3]`	affected	generic	—
`[X12.6.4,X12.6.4]`	affected	generic	—
`[X12.7.0,X12.7.0]`	affected	generic	—
`[X12.7.1,X12.7.1]`	affected	generic	—
`[X14.0.0,X14.0.0]`	affected	generic	—
`[X14.0.1,X14.0.1]`	affected	generic	—
`[X14.0.2,X14.0.2]`	affected	generic	—
`[X14.0.3,X14.0.3]`	affected	generic	—
`[X14.0.4,X14.0.4]`	affected	generic	—
`[X14.0.5,X14.0.5]`	affected	generic	—
`[X14.0.6,X14.0.6]`	affected	generic	—
`[X14.0.7,X14.0.7]`	affected	generic	—
`[X14.0.8,X14.0.8]`	affected	generic	—
`[X14.2.0,X14.2.0]`	affected	generic	—
`[X14.0.9,X14.0.9]`	affected	generic	—
`[X14.2.1,X14.2.1]`	affected	generic	—
`[X14.2.2,X14.2.2]`	affected	generic	—
`[X14.0.11,X14.0.11]`	affected	generic	—
`[X14.2.5,X14.2.5]`	affected	generic	—
`[X14.0.10,X14.0.10]`	affected	generic	—
`[X14.2.6,X14.2.6]`	affected	generic	—
`[X14.2.7,X14.2.7]`	affected	generic	—
`[X14.3.0,X14.3.0]`	affected	generic	—
`[X14.3.1,X14.3.1]`	affected	generic	—
`[X14.3.2,X14.3.2]`	affected	generic	—
`[X14.3.3,X14.3.3]`	affected	generic	—
`[X15.0.0,X15.0.0]`	affected	generic	—
`[X14.3.4,X14.3.4]`	affected	generic	—
`[X14.3.5,X14.3.5]`	affected	generic	—
`[X15.0.1,X15.0.1]`	affected	generic	—
`[X15.0.2,X15.0.2]`	affected	generic	—
`[X15.0.3,X15.0.3]`	affected	generic	—
`[X14.3.6,X14.3.6]`	affected	generic	—
`[X15.2.0,X15.2.0]`	affected	generic	—
`[X15.2.1,X15.2.1]`	affected	generic	—
`[X15.2.2,X15.2.2]`	affected	generic	—
`[X15.2.3,X15.2.3]`	affected	generic	—
`[X14.3.7,X14.3.7]`	affected	generic	—
`[X15.2.4.,X15.2.4.]`	affected	generic	—
`[X15.2.4,X15.2.4]`	affected	generic	—
`[X15.3.0,X15.3.0]`	affected	generic	—
`[X15.3.1,X15.3.1]`	affected	generic	—
`[X15.3.2,X15.3.2]`	affected	generic	—
`[X15.4.0,X15.4.0]`	affected	generic	—
`[X15.5.0,X15.5.0]`	affected	generic	—
`[X15.5.1,X15.5.1]`	affected	generic	—
`[X15.5.2,X15.5.2]`	affected	generic	—
`[X15.5.3,X15.5.3]`	affected	generic	—

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-exwy-hardening-FhcqBVcs

History

Thu, 22 Oct 2026 11:00:00 +0000

Type	Values Removed	Values Added
First Time appeared		Cisco Cisco expressway Series
Vendors & Products		Cisco Cisco expressway Series

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-2026-76492 are related to issues concerning null pointers that are grouped under the Common Weakness Enumeration (CWE) Base CWE-476.
Title		Cisco Expressway Series Software Hardening Release: October 2026 - NULL Pointer Vulnerabilities
Weaknesses		CWE-476
References		https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-exwy-hardening-FhcqBVcs
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}`

Subscriptions

Cisco Expressway Series

MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2026-10-21T16:17:14.565Z

Updated: 2026-10-22T13:37:53.228Z

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

Link: CVE-2026-76492

Vulnrichment

No data.

NVD

Status : Awaiting Analysis

Published: 2026-10-21T17:19:08.620

Modified: 2026-10-21T18:54:37.403

Link: CVE-2026-76492

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-10-22T10:41:05Z

Weaknesses

CWE-476

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Subscriptions

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