CVE-2026-20245

Published Jun 4, 2026

Last updated a month ago

Exploit known CVSS high 7.8

Network

Tunneling protocol

Server

Firmware

Overview

AI description

Automated description summarized from trusted sources.

CVE-2026-20245 is a command injection vulnerability found in the command-line interface (CLI) of Cisco Catalyst SD-WAN Manager, previously known as SD-WAN vManage. This flaw arises from insufficient validation of user-supplied input, allowing an authenticated attacker with netadmin privileges to upload a specially crafted file. Upon successful exploitation, the attacker can execute arbitrary commands as root on the affected system. Cisco has observed limited instances of this vulnerability being exploited in the wild, with some cases resulting in configuration changes being pushed to edge devices. It is noted that the required netadmin privileges can be obtained either through valid credentials or by leveraging other vulnerabilities, such as CVE-2026-20182 or CVE-2026-20127.

Description: A vulnerability in the CLI of Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by uploading a crafted file to the affected system. A successful exploit could allow the attacker to perform command injection attacks on an affected system and elevate their privileges as the root user.  To exploit this vulnerability, the attacker must have netadmin privileges on the affected system. This would require valid credentials or exploitation of or . Cisco is not aware of successful exploitation by other methods. Cisco has observed limited cases where the exploitation of this bug resulted in a configuration change pushed to edge devices. Cisco recommends that customers upgrade to the fixed software that is documented in the that was published on May 14, 2026, and verify the configuration of the edge devices.
Source: psirt@cisco.com
NVD status: Analyzed
Products: catalyst_sd-wan_manager, sd-wan_vsmart_controller

Risk scores

CVSS 3.1

Type: Secondary
Base score: 7.8
Impact score: 5.9
Exploitability score: 1.8
Vector string: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity: HIGH

Known exploits

Data from CISA

Vulnerability name: Cisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output Vulnerability
Exploit added on: Jun 9, 2026
Exploit action due: Jun 23, 2026
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Weaknesses

psirt@cisco.com: CWE-116

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "5021D679-E23A-4D7F-B3B6-D664634A639C",
            "versionEndExcluding": "20.9.9.1",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "26022018-2273-4589-BE4F-AD92DA31CB58",
            "versionEndExcluding": "20.12.5.4",
            "versionStartIncluding": "20.10",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "FDA5CA36-86B6-443D-B772-37A5901F3E83",
            "versionEndExcluding": "20.12.6.2",
            "versionStartIncluding": "20.12.6",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "32A83687-B363-476B-89EF-B35C82575237",
            "versionEndExcluding": "20.15.4.4",
            "versionStartIncluding": "20.13",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "709D0805-4B76-46A0-82D3-93C89926B389",
            "versionEndExcluding": "20.15.5.2",
            "versionStartIncluding": "20.15.5",
            "vulnerable": true
          },
          {
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            "matchCriteriaId": "BB6A9216-3D47-4B33-B502-72B99859992E",
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            "vulnerable": true
          },
          {
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            "matchCriteriaId": "C34C0AB2-3E8E-4B12-BEA2-446F8F248B9A",
            "versionEndExcluding": "26.1.1.1",
            "versionStartIncluding": "26.1",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.7:*:*:*:*:*:*:*",
            "matchCriteriaId": "6A03BCEF-DC25-488D-91D3-0A16F3B872E3",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "0824EC8B-3153-4298-8570-C115A95FCCF1",
            "versionEndExcluding": "20.9.9.1",
            "vulnerable": true
          },
          {
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            "versionEndExcluding": "20.12.5.4",
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            "vulnerable": true
          },
          {
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            "vulnerable": true
          },
          {
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            "vulnerable": true
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          {
            "criteria": "cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "4D40D018-E4EB-4CC8-A2B0-F8E1DA2E3350",
            "versionEndExcluding": "20.18.2.2",
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            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "788140A2-0378-487E-9C9A-84080C9BC7A5",
            "versionEndExcluding": "26.1.1.1",
            "versionStartIncluding": "26.1",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:sd-wan_vsmart_controller:20.12.7:*:*:*:*:*:*:*",
            "matchCriteriaId": "0F4FFF4B-5C26-4014-A9B2-EE342F3FE3C8",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.