What’s Vulnerable › Vulnerabilities
CVE-2024-10635: Enterprise Protection S/MIME Opaque Signature Attachment Scanning Bypass
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-04-28 · updated 2026-06-17
- Weakness: CWE-754
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.
Affected products
- Proofpoint Enterprise Protection: 8.18.6, 8.20.6, 8.21.0
References
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