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-2026-76491 are related to issues concerning reachable assertions that are grouped under the Common Weakness Enumeration (CWE) Base CWE-617.
The vulnerabilities tracked by CVE-2026-76491 are related to issues concerning reachable assertions that are grouped under the Common Weakness Enumeration (CWE) Base CWE-617.
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).
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| Cisco | Cisco TelePresence Video Communication Server (VCS) Expressway | unknown |
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| Cisco | Expressway Series | 100% |
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Found an issue or want to improve our Enrichment? You can suggest it directly by opening an issue on our dedicated GitHub repository .
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.
References
History
Thu, 22 Oct 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
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-2026-76491 are related to issues concerning reachable assertions that are grouped under the Common Weakness Enumeration (CWE) Base CWE-617. | |
| Title | Cisco Expressway Series Software Hardening Release: October 2026 - Denial of Service Vulnerabilities | |
| Weaknesses | CWE-617 | |
| References |
| |
| Metrics |
cvssV3_1
|
MITRE
Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2026-10-22T13:37:53.379Z
Reserved: 2026-08-19T12:02:03.640Z
Link: CVE-2026-76491
Vulnrichment
Updated: 2026-10-22T13:35:26.413Z
NVD
Status : Awaiting Analysis
Published: 2026-10-21T17:19:08.480
Modified: 2026-10-22T14:17:47.383
Link: CVE-2026-76491
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-10-22T10:41:08Z
Weaknesses
-
CWE-617
Reachable Assertion