---
id: CVE-2024-6594
title: >-
  Improper Handling of Exceptional Conditions vulnerability in the WatchGuard
  Single Sign-On Client on Windows causes the client to crash while handling
  malformed commands
summary: >-
  Improper Handling of Exceptional Conditions vulnerability in the WatchGuard
  Single Sign-On Client on Windows causes the client to crash while handling
  malformed commands. An attacker with network access to the client could create
  a denia…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-755
  - CWE-755
vendor: watchguard
product: single_sign-on_client
affected:
  - single_sign-on_client <= 12.7
published: '2024-09-25'
updated: '2026-08-08'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-6594'
references:
  - url: 'https://psirt.watchguard.com/CVE-2024-6594'
    label: 5d1c2695-1a31-4499-88ae-e847036fd7e3
  - url: 'https://www.redteam-pentesting.de/advisories/rt-sa-2024-008'
    label: 5d1c2695-1a31-4499-88ae-e847036fd7e3
  - url: 'https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2024-00016'
    label: 5d1c2695-1a31-4499-88ae-e847036fd7e3
tags:
  - nvd
epss: 0.00633
epssPercentile: 0.49
ingestedAt: '2026-08-08T00:19:07.540Z'
---

## Overview

Improper Handling of Exceptional Conditions vulnerability in the WatchGuard Single Sign-On Client on Windows causes the client to crash while handling malformed commands. An attacker with network access to the client could create a denial of service condition for the Single Sign-On service by repeatedly issuing malformed commands.

## Affected

- `single_sign-on_client <= 12.7`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.