CVE-2026-75136
CVE-2026-75136
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (4.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 4.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Weakness classification (CWE)
References
- upsignon.eu/en/resources/release-notes/app (release-notes)
- www.vulncheck.com/advisories/upsignon-biometric-key-exposure-via-windows-passwo… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-75136?
- CVE-2026-75136 is a medium-severity vulnerability, classified under Insufficiently Protected Credentials. CVSS score: 6.1/10. Published 2026-09-02.
- How severe is CVE-2026-75136?
- Medium severity. CVSS v3 base score is 6.1 out of 10.