CVE-2026-76504
Cisco Catalyst SD-WAN Manager System Account Authorization Bypass Vulnerability
At a glance
- Source
- NVD
- EPSS
- EPSS 38.93 % · percentile 99 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Analyzed
Description
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.
Weaknesses (CWE)
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | cisco |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · psirt@cisco.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-89950
- GCVE · GCVE-0-2026-76504
CERT-FR advisories
- CERTFR-2026-AVI-1246 — Vulnérabilité dans Cisco Catalyst SD-WAN · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*< 20.9.10.1cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*≥ 20.12 < 20.12.8.2cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*≥ 20.15 < 20.15.6.1cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*≥ 20.18 < 20.18.4.1cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*≥ 26.1 < 26.1.2.1cpe:2.3:a:cisco:catalyst_sd-wan_manager:26.2:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco Catalyst SD-WAN Manager | affected 20.1.12 ; affected 19.2.1 ; affected 18.4.4 ; affected 18.4.5 ; affected 20.1.1.1 ; affected 20.1.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| CISA Known Exploited Vulnerabilities | CC0 1.0 |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |