# CVE-2026-75135

## Summary

- **CVE ID:** CVE-2026-75135
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-316
- **Published:** Sep 2, 2026
- **Last Modified:** Sep 5, 2026

## Description

UpSignOn for Windows before 7.19.0 contains a sensitive data exposure vulnerability that allows local attackers to recover the master password and decrypt vault contents by reading a retained backup key from the process memory of UpSignOn.exe, even after the vault has been re-locked. Attackers can extract the backup key from process memory to decrypt the encrypted master password backup stored in v6-vault1.DATA.txt, then use the recovered master password to decrypt the main vault and export all password manager entries in cleartext.

## Affected Products

- Septeo IT Solutions — UpSignOn (0)

## References

- [CNA](https://upsignon.eu/en/resources/release-notes/app#7.19.0)
- [CNA](https://www.vulncheck.com/advisories/upsignon-sensitive-key-retention-in-memory)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.07%
- **EPSS Percentile:** 0.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._