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CVE-2026-20245

Cisco Catalyst SD-WAN Controller Authenticated Privilege Escalation Vulnerability

CVSS 3.1 High 7.8Known exploited (CISA KEV)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Official description from the CVE record, published by cisco. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org

Key data

CVSS 3.1 High 7.8

Score published by cisco in the CVE record.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Local

    The attacker needs local access to the system, or to trick a user into running something.

  • Attack complexity: Low

    No special conditions are needed. The attack can be repeated at will.

  • Privileges required: Low

    A basic user account is needed.

  • User interaction: None

    No action from any user is needed.

  • Scope: Unchanged

    The impact stays within the vulnerable component.

  • Confidentiality impact: High

    Serious or total effect on the secrecy of data.

  • Integrity impact: High

    Serious or total effect on the trustworthiness of data.

  • Availability impact: High

    Serious or total effect on availability.

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.

EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.
Score
0.25323 (25.3% probability)
Percentile
98.0%
Scores of
Nov 10, 2026
Model
v2026.06.15

CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.
Name in the catalog
Cisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output Vulnerability
Added to the catalog
Jun 9, 2026
Federal due date
Jun 23, 2026

CISA assessment as of Jun 5, 2026

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.
Exploitation
Recorded by CISA as active
Automatable
no
Technical impact
total

Weakness (CWE)

CWE catalog version 5.0.
CWE names: Copyright © 2006-2026, The MITRE Corporation. See /security/cve/legal for the CWE license.
  • CWE-116Improper Encoding or Escaping of Output

Affected products

Products listed in the CVE record, as the CNA published them.

  • Cisco Catalyst SD-WAN Controller

    • affected: 20.6.4
    • affected: 20.9.2
    • affected: 20.3.6
    • affected: 20.7.2
    • affected: 20.7.1
    • affected: 20.5.1
    • affected: 20.6.2
    • affected: 19.3.0
    • affected: 20.6.1
    • affected: 17.2.4
    • affected: 18.2.0
    • affected: 18.4.6
    • affected: 19.1.0
    • affected: 19.2.4
    • affected: 19.2.929
    • affected: 18.3.8
    • affected: 18.4.303
    • affected: 18.3.7
    • affected: 18.4.1
    • affected: 19.2.097
    • affected: 19.2.0
    • affected: 19.2.099
    • affected: 18.3.6
    • affected: 20.4.2
    • affected: 19.0.0
    • and 116 more

  • 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
    • affected: 19.3.0
    • affected: 19.2.2
    • affected: 19.2.099
    • affected: 18.3.6
    • affected: 18.3.7
    • affected: 19.2.0
    • affected: 18.3.8
    • affected: 19.0.0
    • affected: 19.1.0
    • affected: 18.4.302
    • affected: 18.4.303
    • affected: 19.2.097
    • affected: 19.2.098
    • affected: 17.2.10
    • affected: 18.3.6.1
    • affected: 19.0.1a
    • affected: 18.2.0
    • affected: 18.4.3
    • affected: 18.4.1
    • and 351 more

References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

Timeline

  1. ID reserved
  2. Record published
  3. Added to CISA KEV
  4. Record last updated

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About CubePath

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:09 UTC. Sources and licenses