Description
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.
Problem types
CWE-754 Improper Check for Unusual or Exceptional Conditions
Product status
8.18.6 (semver) before patch 5110
8.20.6 (semver) before patch 5134
8.21.0 (semver) before patch 5112
References
www.proofpoint.com/.../security-advisories/pfpt-sa-2025-0002