---
id: "CVE-2026-115495"
kind: "vulnerability"
aliases: ["CVE-2026-115495"]
title: "WatchGuard Mobile VPN Windows client leaks VPN credentials over loopback"
severity: "medium"
cvss: 5.7
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["endpoint", "infrastructure", "vpn", "watchguard", "windows"]
not_affected_if: ["no-watchguard-client", "single-user-endpoint"]
published_at: "2026-10-27T16:17:30+00:00"
first_seen_at: "2026-10-27T16:33:07+00:00"
updated_at: "2026-10-27T16:34:27+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115495", "first_seen_at": "2026-10-27T16:33:07+00:00"}]
---

# WatchGuard Mobile VPN Windows client leaks VPN credentials over loopback

The WatchGuard Mobile VPN with SSL client for Windows sends sensitive data over loopback in cleartext. A local attacker who can capture loopback traffic on the same machine can read the user's VPN username and password.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed WatchGuard Mobile VPN with SSL client version on Windows machines against the fixed version in the vendor advisory (unknown in sources)
- Confirm whether untrusted local users or processes run on the same endpoint

## Fix

- Update WatchGuard Mobile VPN with SSL client for Windows to a fixed release (version unknown in sources)
- Rotate VPN passwords on endpoints where the client was used on a shared machine

## Timeline

- 2026-10-27T16:33:07+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-115495

## From the sources

Cleartext Transmission of Sensitive Information vulnerability in the WatchGuard Mobile VPN with SSL client for Windows allows a local attacker who can capture loopback traffic to obtain the user’s VPN username and password.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_