Medium severity · published Oct 21, 2026
CVE-2026-76435
Cisco Expressway Series Information Disclosure Vulnerability
New
5.3
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CT
Cisco TelePresence Video Communication Server (VCS) Expressway · Cisco
X8.11.2; X8.6; X8.11.3; X8.2.2; X8.8.3; X8.11.0; +34 more · source: vendor
Affected product
CT
Cisco TelePresence Video Communication Server (VCS) Expressway
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76435
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-76435
sec.cloudapps.cisco.com
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-inf-disc-vvYqgSTS
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