CVE-2017-7229: Vaultive Office 365 Security

Critical severity, CVSS 9.1. EPSS: 0.8% chance of exploitation in the next 30 days.

PGP/MIME encrypted messages injected into a Vaultive O365 (before 4.5.21) frontend via IMAP or SMTP have their Content-Type changed from 'Content-Type: multipart/encrypted; protocol="application/pgp-encrypted"; boundary="abc123abc123"' to 'Content-Type: text/plain' - this results in the encrypted message being structured in such a way that most PGP/MIME-capable mail user agents are unable to decrypt it cleanly. The outcome is that encrypted mail passing through this device does not work (Denial of Service), and a common real-world consequence is a request to resend the mail in the clear (Information Disclosure).

Affected products

• Vaultive Office 365 Security: version 4.5.19 only

Published 2017-05-03. Last modified 2026-06-17.