CVE-2026-20245

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.

CVSS v3.1 Score

7.8

HIGH

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

EPSS — Exploit Prediction

0.2532

Probability of exploitation

0.98%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

CISA Known Exploited Vulnerability

This vulnerability is actively exploited in the wild.

Added: Jun 9, 2026 Remediation due: Jun 23, 2026

Weakness Type (CWE)

CWE-116 CWE-116

Affected Products

Vendor	Product	Versions
cisco	catalyst_sd-wan_manager	< 20.9.9.1
cisco	catalyst_sd-wan_manager	20.10 — 20.12.5.4
cisco	catalyst_sd-wan_manager	20.12.6 — 20.12.6.2
cisco	catalyst_sd-wan_manager	20.13 — 20.15.4.4
cisco	catalyst_sd-wan_manager	20.15.5 — 20.15.5.2
cisco	catalyst_sd-wan_manager	20.16 — 20.18.2.2
cisco	catalyst_sd-wan_manager	26.1 — 26.1.1.1
cisco	catalyst_sd-wan_manager	All
cisco	sd-wan_vsmart_controller	< 20.9.9.1
cisco	sd-wan_vsmart_controller	20.10 — 20.12.5.4
cisco	sd-wan_vsmart_controller	20.12.6 — 20.12.6.2
cisco	sd-wan_vsmart_controller	20.13 — 20.15.4.4
cisco	sd-wan_vsmart_controller	20.15.5 — 20.15.5.2
cisco	sd-wan_vsmart_controller	20.16 — 20.18.2.2
cisco	sd-wan_vsmart_controller	26.1 — 26.1.1.1
cisco	sd-wan_vsmart_controller	All

References

Advisories & Patches

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-privesc-4uxFrdzx https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa2-v69WY2SW

Other References

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20245

Frequently Asked Questions

What is CVE-2026-20245? +

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. It has a CVSS v3.1 base score of 7.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2026-20245? +

CVE-2026-20245 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.2532, placing it in the 1th percentile for exploitation probability.

What products are affected by CVE-2026-20245? +

CVE-2026-20245 affects products from cisco, specifically: catalyst_sd-wan_manager, sd-wan_vsmart_controller. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-20245? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-45570

go-git is an extensible git implementation library written in pure Go. Prior to 5.19.1 and 6.0.0-alpha.4, go-git's SSH transport constructs …

CVE-2025-1795

During an address list folding when a separating comma ends up on a folded line and that line is to …

CVE-2025-32072

Improper Encoding or Escaping of Output vulnerability in The Wikimedia Foundation Mediawiki Core - Feed Utils allows WebView Injection.This issue …

CVE-2025-32078

Improper Encoding or Escaping of Output vulnerability in The Wikimedia Foundation Mediawiki - Version Compare Extension allows Cross-Site Scripting (XSS).This …

CVE-2025-1308

A vulnerability exists in PX Backup whereby sensitive information may be logged under specific conditions.

CVE-2025-34141

A reflected cross-site scripting (XSS) vulnerability exists in ETQ Reliance CG (legacy) platform within the `SQLConverterServlet` component. This vulnerability requires …