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CVE-2026-20122

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
25/02/2026
Last modified:
21/04/2026

Description

A vulnerability in the API of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to overwrite arbitrary files on the local file system. To exploit this vulnerability, the attacker must have valid read-only credentials with API access on the affected system.<br /> <br /> This vulnerability is due to improper file handling on the API interface of an affected system. An attacker could exploit this vulnerability by uploading a malicious file on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system&amp;nbsp;and gain vmanage user privileges.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.40 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): Low
Availability (A): None

Base Score 3.x
5.40
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* 20.9.8.2 (excluding)
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* 20.10 (including) 20.12.5.3 (excluding)
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* 20.13 (including) 20.15.4.2 (excluding)
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* 20.16 (including) 20.18.2.1 (excluding)
cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.6:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools