---
id: CVE-2026-76435
title: Cisco Expressway Series Information Disclosure Vulnerability
summary: "A vulnerability in Cisco Expressway Series could allow an unauthenticated, remote attacker to obtain sensitive information from an affected device.\r\n\r\nThis vulnerability is due to insufficient authorization checks of HTTP requests during…"
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-497
vendor: Cisco
product: Cisco TelePresence Video Communication Server (VCS) Expressway
affected:
  - telepresence_video_communication_server_vcs_expressway X8.11.2
  - telepresence_video_communication_server_vcs_expressway X8.6
  - telepresence_video_communication_server_vcs_expressway X8.11.3
  - telepresence_video_communication_server_vcs_expressway X8.2.2
  - telepresence_video_communication_server_vcs_expressway X8.8.3
  - telepresence_video_communication_server_vcs_expressway X8.11.0
  - telepresence_video_communication_server_vcs_expressway X12.5.2
  - telepresence_video_communication_server_vcs_expressway X8.1.1
  - telepresence_video_communication_server_vcs_expressway X8.9
  - telepresence_video_communication_server_vcs_expressway X12.5.1
  - telepresence_video_communication_server_vcs_expressway X12.5.6
  - telepresence_video_communication_server_vcs_expressway X8.7.3
  - telepresence_video_communication_server_vcs_expressway X12.6.0
  - telepresence_video_communication_server_vcs_expressway X8.11.1
  - telepresence_video_communication_server_vcs_expressway X8.5
  - telepresence_video_communication_server_vcs_expressway X8.9.1
  - telepresence_video_communication_server_vcs_expressway X8.10.2
  - telepresence_video_communication_server_vcs_expressway X8.8.2
  - telepresence_video_communication_server_vcs_expressway X8.5.3
  - telepresence_video_communication_server_vcs_expressway X8.1
  - telepresence_video_communication_server_vcs_expressway X8.9.2
  - telepresence_video_communication_server_vcs_expressway X8.11.4
  - telepresence_video_communication_server_vcs_expressway X12.5.4
  - telepresence_video_communication_server_vcs_expressway X8.8.1
  - telepresence_video_communication_server_vcs_expressway X8.2.1
  - telepresence_video_communication_server_vcs_expressway X8.5.1
  - telepresence_video_communication_server_vcs_expressway X8.6.1
  - telepresence_video_communication_server_vcs_expressway X8.1.2
  - telepresence_video_communication_server_vcs_expressway X8.8
  - telepresence_video_communication_server_vcs_expressway X8.10.0
  - telepresence_video_communication_server_vcs_expressway X12.5.3
  - telepresence_video_communication_server_vcs_expressway X8.10.1
  - telepresence_video_communication_server_vcs_expressway X12.5.7
  - telepresence_video_communication_server_vcs_expressway X8.10.3
  - telepresence_video_communication_server_vcs_expressway X8.7.1
  - telepresence_video_communication_server_vcs_expressway X8.2
  - telepresence_video_communication_server_vcs_expressway X12.5.8
  - telepresence_video_communication_server_vcs_expressway X8.7
  - telepresence_video_communication_server_vcs_expressway X8.5.2
  - telepresence_video_communication_server_vcs_expressway X12.5.9
  - telepresence_video_communication_server_vcs_expressway X12.5.0
  - telepresence_video_communication_server_vcs_expressway X8.10.4
  - telepresence_video_communication_server_vcs_expressway X8.7.2
  - telepresence_video_communication_server_vcs_expressway X12.5.5
  - telepresence_video_communication_server_vcs_expressway X12.6.1
  - telepresence_video_communication_server_vcs_expressway X12.6.2
  - telepresence_video_communication_server_vcs_expressway X12.6.3
  - telepresence_video_communication_server_vcs_expressway X12.6.4
  - telepresence_video_communication_server_vcs_expressway X12.7.0
  - telepresence_video_communication_server_vcs_expressway X12.7.1
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T16:14:19.230Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-76435'
references:
  - url: >-
      https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-inf-disc-vvYqgSTS
    label: cisco-sa-expressway-inf-disc-vvYqgSTS
tags:
  - cve.org
ingestedAt: '2026-10-21T17:07:51.304Z'
---

## Overview

A vulnerability in Cisco Expressway Series could allow an unauthenticated, remote attacker to obtain sensitive information from an affected device.

This vulnerability is due to insufficient authorization checks of HTTP requests during Mobile and Remote Access (MRA) provisioning. An attacker could exploit this vulnerability by submitting a crafted URL request to an affected device. A successful exploit could allow the attacker to access sensitive information that they would otherwise not have authorization to access.
Note: Cisco Expressway Series refers to Cisco Expressway Core (Expressway-C) devices and Cisco Expressway Edge (Expressway-E) devices.

## Affected

- `telepresence_video_communication_server_vcs_expressway X8.11.2`
- `telepresence_video_communication_server_vcs_expressway X8.6`
- `telepresence_video_communication_server_vcs_expressway X8.11.3`
- `telepresence_video_communication_server_vcs_expressway X8.2.2`
- `telepresence_video_communication_server_vcs_expressway X8.8.3`
- `telepresence_video_communication_server_vcs_expressway X8.11.0`
- `telepresence_video_communication_server_vcs_expressway X12.5.2`
- `telepresence_video_communication_server_vcs_expressway X8.1.1`
- `telepresence_video_communication_server_vcs_expressway X8.9`
- `telepresence_video_communication_server_vcs_expressway X12.5.1`
- `telepresence_video_communication_server_vcs_expressway X12.5.6`
- `telepresence_video_communication_server_vcs_expressway X8.7.3`
- `telepresence_video_communication_server_vcs_expressway X12.6.0`
- `telepresence_video_communication_server_vcs_expressway X8.11.1`
- `telepresence_video_communication_server_vcs_expressway X8.5`
- `telepresence_video_communication_server_vcs_expressway X8.9.1`
- `telepresence_video_communication_server_vcs_expressway X8.10.2`
- `telepresence_video_communication_server_vcs_expressway X8.8.2`
- `telepresence_video_communication_server_vcs_expressway X8.5.3`
- `telepresence_video_communication_server_vcs_expressway X8.1`
- `telepresence_video_communication_server_vcs_expressway X8.9.2`
- `telepresence_video_communication_server_vcs_expressway X8.11.4`
- `telepresence_video_communication_server_vcs_expressway X12.5.4`
- `telepresence_video_communication_server_vcs_expressway X8.8.1`
- `telepresence_video_communication_server_vcs_expressway X8.2.1`
- `telepresence_video_communication_server_vcs_expressway X8.5.1`
- `telepresence_video_communication_server_vcs_expressway X8.6.1`
- `telepresence_video_communication_server_vcs_expressway X8.1.2`
- `telepresence_video_communication_server_vcs_expressway X8.8`
- `telepresence_video_communication_server_vcs_expressway X8.10.0`
- `telepresence_video_communication_server_vcs_expressway X12.5.3`
- `telepresence_video_communication_server_vcs_expressway X8.10.1`
- `telepresence_video_communication_server_vcs_expressway X12.5.7`
- `telepresence_video_communication_server_vcs_expressway X8.10.3`
- `telepresence_video_communication_server_vcs_expressway X8.7.1`
- `telepresence_video_communication_server_vcs_expressway X8.2`
- `telepresence_video_communication_server_vcs_expressway X12.5.8`
- `telepresence_video_communication_server_vcs_expressway X8.7`
- `telepresence_video_communication_server_vcs_expressway X8.5.2`
- `telepresence_video_communication_server_vcs_expressway X12.5.9`
- `telepresence_video_communication_server_vcs_expressway X12.5.0`
- `telepresence_video_communication_server_vcs_expressway X8.10.4`
- `telepresence_video_communication_server_vcs_expressway X8.7.2`
- `telepresence_video_communication_server_vcs_expressway X12.5.5`
- `telepresence_video_communication_server_vcs_expressway X12.6.1`
- `telepresence_video_communication_server_vcs_expressway X12.6.2`
- `telepresence_video_communication_server_vcs_expressway X12.6.3`
- `telepresence_video_communication_server_vcs_expressway X12.6.4`
- `telepresence_video_communication_server_vcs_expressway X12.7.0`
- `telepresence_video_communication_server_vcs_expressway X12.7.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.