Enterprise Protection contains an improper input validation vulnerability in attachment defense that allows an unauthenticated remote attacker to bypass attachment scanning security policy by sending a malicious S/MIME attachment with an opaque signature. When opened by a recipient in a downstream email client, the malicious attachment could cause partial loss of integrity and confidentiality to their system.
2025-04-28T21:15:56.427
2025-10-06T21:15:32.307
Modified
CVSSv3.1: 6.1 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | proofpoint | enterprise_protection | 8.18.6 | Yes |
| Application | proofpoint | enterprise_protection | 8.20.6 | Yes |
| Application | proofpoint | enterprise_protection | 8.21.0 | Yes |