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-2026-76496 are related to issues concerning improper link resolutions that are grouped under the Common Weakness Enumeration (CWE) Base CWE-59.
Published: 2026-10-21
Score: 7 High
EPSS: < 1% Very Low
KEV: No
Impact: Improper link resolution can lead to unauthorized redirection or access to unintended internal resources
Action: Immediate Patch
AI Analysis

Impact

The vulnerability, identified as CWE‑59, involves improper link resolution in Cisco TelePresence Video Communication Server Expressway software. Improper resolution could allow an attacker to manipulate link targets, potentially redirecting requests to unintended destinations or exposing internal resources. The description does not specify which privileged functions are affected, but the nature of the flaw suggests a risk to confidentiality and integrity if exploitation succeeds.

Affected Systems

Cisco TelePresence Video Communication Server (VCS) Expressway is affected. The specific versions are not listed in the provided data; administrators should consult the Cisco Security Advisory for applicable releases.

Risk and Exploitability

The CVSS score of 7 indicates a medium-to-high severity. EPSS is not available, so the current likelihood of exploitation is uncertain. The flaw is not listed in the CISA KEV catalog. Because the attack vector is not explicitly defined in the advisory, it is inferred that the vulnerability could be exploited via network-facing services that process URLs, but no definitive vector is confirmed. The risk therefore hinges on network exposure and configuration of the Expressway instances.

Generated by OpenCVE AI on October 22, 2026 at 04:55 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the Cisco Expressway Series software hardening release that contains the fix for CWE‑59 link resolution vulnerabilities
  • Configure internal link resolution settings to enforce absolute URLs and reject or validate unexpected redirects
  • Review Expressway access control policies to ensure that only authorized users can manipulate or request URLs

Generated by OpenCVE AI on October 22, 2026 at 04:55 UTC.

Tracking

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Advisories

No advisories yet.

History

Sat, 07 Nov 2026 18:30:00 +0000


Thu, 22 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


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. &nbsp; The vulnerabilities tracked by CVE-2026-76496 are related to issues concerning improper link resolutions that are grouped under the Common Weakness Enumeration (CWE) Base CWE-59.
Title Cisco Expressway Series Software Hardening Release: October 2026 - Improper Link Resolution Vulnerabilities
Weaknesses CWE-59
References
Metrics cvssV3_1

{'score': 7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Subscriptions

Cisco Expressway Series
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-11-07T17:29:44.041Z

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

Link: CVE-2026-76496

cve-icon Vulnrichment

Updated: 2026-11-07T17:29:44.041Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-21T17:19:09.177

Modified: 2026-11-07T18:17:28.823

Link: CVE-2026-76496

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-22T10:40:56Z

Weaknesses
  • CWE-59

    Improper Link Resolution Before File Access ('Link Following')