Executive brief
UpSignOn for Windows is a password manager that stores sensitive credentials and authentication data. A vulnerability allows local attackers with basic permissions to read the application's memory and extract cleartext passwords, usernames, TOTP secrets, and other sensitive vault data even after the application is locked, potentially compromising all stored credentials.
Technical details
The vulnerability is a cleartext storage of sensitive information in memory (CWE-316). Even after the application locks, sensitive vault data including entry names, URLs, usernames, passwords, TOTP secrets, and notes remain unencrypted in the process memory of UpSignOn.exe. An attacker with local access and PROCESS_VM_READ permission can read this memory space and extract all sensitive fields. The attack requires local network/process access and low-level privileges but no user interaction. The vulnerability was fixed in version 7.19.0 released on 05/08/2026.
Affected products
- UpSignOn UpSignOn for Windows before 7.19.0
Timeline
- 2026-09-02: disclosed
- 2026-08-05: patched: Fixed in version 7.19.0