CVE-2026-20245

HIGH KEV

Cisco Catalyst SD-WAN Controller Authenticated Privilege Escalation Vulnerability

Title source: cna
STIX 2.1

Exploitation Summary

CVE-2026-20245 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added June 9, 2026. EIP tracks 3 public exploits from researchers including 0xBlackash, fevar54, HORKimhab.

AI-analyzed exploit summary The repository contains a functional Python exploit for CVE-2026-20245, targeting Cisco Catalyst SD-WAN Manager. It demonstrates an authenticated privilege escalation via crafted CSV file upload, leading to root command execution.

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.

Exploits (3)

github WORKING POC
by 0xBlackash · pythonpoc
https://github.com/0xBlackash/CVE-2026-20245

The repository contains a functional Python exploit for CVE-2026-20245, targeting Cisco Catalyst SD-WAN Manager. It demonstrates an authenticated privilege escalation via crafted CSV file upload, leading to root command execution.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: Cisco Catalyst SD-WAN Manager
Auth required
Prerequisites: netadmin credentials · network access to target
devstral-2 · analyzed Jun 14, 2026 Full analysis →
github WORKING POC
by fevar54 · pythonpoc
https://github.com/fevar54/CVE-2026-20245---Cisco-SD-WAN-Privilege-Escalation-Exploit

This repository contains a functional exploit for CVE-2026-20245, a privilege escalation vulnerability in Cisco SD-WAN Manager/Controller/Validator. The exploit leverages command injection via crafted CSV file uploads to execute arbitrary commands as root.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: Cisco Catalyst SD-WAN Manager/Controller/Validator < 20.18.3.1
Auth required
Prerequisites: Authenticated access with netadmin privileges · Network access to the target system
devstral-2 · analyzed Jun 10, 2026 Full analysis →
github STUB
by HORKimhab · poc
https://github.com/HORKimhab/CVE-2026-20245

The repository contains only a template structure with no actual exploit code or technical details about CVE-2026-20245. It includes placeholder files and a generic README with legal disclaimers but no functional PoC.

Classification
Stub 95%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: unspecified
No auth needed
devstral-2 · analyzed Jun 06, 2026 Full analysis →

Scores

CVSS v3 7.8
EPSS 0.0095
EPSS Percentile 56.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2026-06-09
VulnCheck KEV 2026-06-05
ENISA EUVD EUVD-2026-34341
CWE
CWE-116
Status published
Products (50)
cisco/catalyst_sd-wan_manager 20.12.7
cisco/catalyst_sd-wan_manager < 20.9.9.1
Cisco/Cisco Catalyst SD-WAN Controller 17.2.10
Cisco/Cisco Catalyst SD-WAN Controller 17.2.4
Cisco/Cisco Catalyst SD-WAN Controller 17.2.5
Cisco/Cisco Catalyst SD-WAN Controller 17.2.6
Cisco/Cisco Catalyst SD-WAN Controller 17.2.7
Cisco/Cisco Catalyst SD-WAN Controller 17.2.8
Cisco/Cisco Catalyst SD-WAN Controller 17.2.9
Cisco/Cisco Catalyst SD-WAN Controller 18.2.0
... and 40 more
Published Jun 04, 2026
KEV Added Jun 09, 2026
Tracked Since Jun 05, 2026