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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 CVE-2026-20182 or CVE-2026-20127. 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 Catalyst SD-WAN Security Advisory that was published on May 14, 2026, and verify the configuration of the edge devices.

Cisco has not released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Important: To preserve possible indicators of compromise, customers should issue the request admin-tech command from each of the control components in the SD-WAN deployment before upgrading. After the admin-tech file has been collected, software should be upgraded at the earliest opportunity.

Before upgrading an SD-WAN deployment to a fixed release, retain relevant logs. After upgrading, verify that the system has not been compromised by checking the logs for the indicators of compromise as documented in this advisory. If the logs show indicators of compromise and the system is confirmed to be compromised, applying the software update alone will not resolve the vulnerability. In such cases, follow the specific remediation steps that will be provided by the Cisco Technical Assistance Center (TAC) to help secure the system. This section will be updated as information becomes available.

This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-privesc-4uxFrdzx

<br/>Security Impact Rating: High <br/>CVE: CVE-2026-20245

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LLMhop is a tiny stateless proxy for LLM inference servers. It tackles an issue I faced when trying to serve more than one local LLM at once which is not natively supported by vLLM. The LLMhop binary inspects the model field of the request and routes it to the correct backend service with optional handling of authentication. In addition, it contains a NixOS module to run llama.cpp, vLLM, and sglang via Quadlet/Podman and auto-register with the proxy.

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