CVE-2026-20126 json
Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability
published 2026-02-25 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-8674
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 26%
- public exploits
- 0
- none known
Summary
A vulnerability in Cisco Catalyst SD-WAN Manager could allow an authenticated, local attacker with low privileges to gain root privileges on the underlying operating system.
This vulnerability is due to an insufficient user authentication mechanism in the REST API. An attacker could exploit this vulnerability by sending a request to the REST API of the affected system. A successful exploit could allow the attacker to gain root privileges on the underlying operating system.
Patch / fix
- cisco catalyst_sd-wan_manager 20.9.8.2, 20.12.5.3, 20.15.4.2, 20.18.2.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 8 mo ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Cisco Cisco Catalyst SD-WAN Manager
Classification
- Weakness
-
- CWE-648 Incorrect Use of Privileged APIs
References
Sources
- CVE List CVE-2026-20126
- NVD CVE-2026-20126
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