---
id: CVE-2026-75136
title: >-
  UpSignOn for Windows before 7.19.0 contains an insecure credential storage
  vulnerability that allows local attackers to retrieve the biometric unlock key
  stored in the Windows PasswordVault API without triggering any authentication
  promp…
summary: >-
  UpSignOn for Windows before 7.19.0 contains an insecure credential storage
  vulnerability that allows local attackers to retrieve the biometric unlock key
  stored in the Windows PasswordVault API without triggering any authentication
  promp…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N'
cwe:
  - CWE-522
published: '2026-09-02'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:18:59.270'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75136'
references:
  - url: 'https://upsignon.eu/en/resources/release-notes/app#7.19.0'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/upsignon-biometric-key-exposure-via-windows-passwordvault
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.0011
epssPercentile: 0.01442
ingestedAt: '2026-09-08T21:11:12.290Z'
---

## Overview

UpSignOn for Windows before 7.19.0 contains an insecure credential storage vulnerability that allows local attackers to retrieve the biometric unlock key stored in the Windows PasswordVault API without triggering any authentication prompt. Attackers can access the stored biometric key from a standard local process within the same Windows session to decrypt the protected vault files and export the entire password manager contents in cleartext.

## Remediation

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