A vulnerability in the API session-based authentication management of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user.
This vulnerability is due to improper handling of URI encoding in an HTTP request, which allows the request to bypass an authentication rule that is intended to restrict access to a specific API endpoint. An attacker could exploit this vulnerability by sending a crafted HTTP request to the API of the affected system. A successful exploit could allow the attacker to bypass authentication and gain access to the API as the admin user.
References
| Link | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-webauth-xr8beuuU | Mitigation Vendor Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76504 | US Government Resource |
Configurations
Configuration 1 (hide)
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History
30 Sep 2026, 22:28
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:cisco:catalyst_sd-wan_manager:26.2:*:*:*:*:*:*:* cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* |
|
| References | () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-webauth-xr8beuuU - Mitigation, Vendor Advisory | |
| References | () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76504 - US Government Resource | |
| First Time |
Cisco catalyst Sd-wan Manager
Cisco |
30 Sep 2026, 18:18
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
30 Sep 2026, 13:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-09-30 13:17
Updated : 2026-10-03 00:16
NVD link : CVE-2026-76504
Mitre link : CVE-2026-76504
CVE.ORG link : CVE-2026-76504
JSON object : View
Products Affected
cisco
- catalyst_sd-wan_manager
CWE
CWE-177
Improper Handling of URL Encoding (Hex Encoding)