MEDIUM 6.9 NVD
CVE-2026-75135
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
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.
References
- https://upsignon.eu/en/resources/release-notes/app#7.19.0
- https://www.vulncheck.com/advisories/upsignon-sensitive-key-retention-in-memory
This medium severity vulnerability with a CVSS score of 6.9 was published on 2026-09-02 via NVD.
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