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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.
Reserved 2024-10-31 | Published 2025-04-28 | Updated 2025-04-28 | Assigner ProofpointCWE-20 Improper Input Validation
www.proofpoint.com/.../security-advisories/pfpt-sa-2025-0002
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