CVE-2026-76435

Cisco Expressway Series Information Disclosure Vulnerability

Published Oct 21, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Description

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 Products

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	—

No data.

Vendor Product Versions

Cisco

Expressway Series

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

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.432% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-inf-disc-vvYqgSTS

History

Oct 22, 2026 2:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Oct 22, 2026 11:00 AM First appearance in the feed. Affected vendors updated View changes

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

Oct 21, 2026 5:15 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		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.
Title		Cisco Expressway Series Information Disclosure Vulnerability
Weaknesses		CWE-497
References		https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-inf-disc-vvYqgSTS
Metrics		cvssV3_1 `{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}`