EUVD-2026-34341
GHSA-h4c6-cm2m-h5f6
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (cisco) · only source for this CVE.
CVSS VectorVendor: cisco
Lifecycle Timeline
3DescriptionCVE.org
A vulnerability in the CLI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, 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.
Articles & Coverage 2
AnalysisAI
Local privilege escalation in Cisco Catalyst SD-WAN Manager (formerly SD-WAN vManage) allows an authenticated netadmin user to execute arbitrary commands as root by uploading a crafted file through the CLI. Cisco has observed limited real-world exploitation that resulted in unauthorized configuration changes being pushed to downstream edge devices, though the issue is not currently listed in CISA KEV and no public exploit code has been identified at time of analysis.
Technical ContextAI
Cisco Catalyst SD-WAN Manager is the centralized management plane for Cisco's SD-WAN fabric, controlling policy and configuration distribution to edge routers across an enterprise WAN. The vulnerability is rooted in CWE-116 (Improper Encoding or Escaping of Output), where the CLI fails to properly validate or sanitize user-supplied input contained in an uploaded file before it is passed to a shell or command interpreter, enabling command injection. Because SD-WAN Manager runs the CLI process with elevated permissions and the injected commands execute as root, the flaw becomes a full privilege escalation from netadmin to root on the management appliance itself, which then has trusted authority over every edge device in the fabric (CPE: cpe:2.3:a:cisco:cisco_catalyst_sd-wan_manager:*).
RemediationAI
Patch available per vendor advisory - upgrade Cisco Catalyst SD-WAN Manager to the fixed release identified in Cisco Security Advisory cisco-sa-sdwan-privesc-4uxFrdzx (https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-privesc-4uxFrdzx) published May 14, 2026, and additionally review cisco-sa-sdwan-rpa2-v69WY2SW for related fixes. Because Cisco has observed exploitation resulting in malicious configuration pushes to edge devices, after upgrading administrators should audit edge-device running configurations against known-good baselines and revert any unauthorized changes. Cisco does not document a workaround for this CLI flaw, so compensating controls until patching is complete should focus on tightly restricting netadmin role assignments, enforcing MFA on SD-WAN Manager administrative accounts, monitoring CLI file-upload activity and edge-device configuration changes for anomalies, and isolating SD-WAN Manager management interfaces to a dedicated administrative network - noting the trade-off that aggressive access restriction may slow legitimate operations during the upgrade window.
Remote unauthenticated attackers can bypass peering authentication in Cisco Catalyst SD-WAN Controller (vSmart) and SD-W
Arbitrary file write via path traversal in Cisco Catalyst SD-WAN Manager (formerly SD-WAN vManage) allows an authenticat
Privilege escalation and cross-boundary information disclosure in Cisco Catalyst SD-WAN Manager and SD-WAN Controller st
Privilege escalation and authentication-boundary bypass in Cisco Catalyst SD-WAN Manager and SD-WAN Controller allows a
Privileged file manipulation in Cisco Catalyst SD-WAN Manager and SD-WAN Controller allows an authenticated attacker to
Cleartext storage of sensitive information in Cisco Catalyst SD-WAN Controller and Manager exposes credentials or other
Remote file disclosure in Cisco Catalyst SD-WAN Manager allows unauthenticated attackers to read arbitrary system files
Remote availability disruption in Cisco Catalyst SD-WAN Manager and Controller allows a low-privileged authenticated att
Cleartext credential exposure in Cisco Catalyst SD-WAN Manager's web-based management interface allows an authenticated
Cisco Catalyst SD-WAN Manager's web interface contains a reflected cross-site scripting (XSS) vulnerability that require
Cisco Catalyst SD-WAN Manager web UI fails to properly redact sensitive information in device configurations and templat
Privilege escalation in Cisco Catalyst SD-WAN Manager allows authenticated users with read-only permissions to elevate p
Same weakness CWE-116 – Improper Encoding or Escaping of Output
View allSame technique Command Injection
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External POC / Exploit Code
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