Enterprise Protection S/MIME Opaque Signature Attachment Scanning Bypass
Priority LOW 27CWE-754Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00312 24th percentileScored 2026-11-07
Fix Fixed Enterprise Protection (Proofpoint): patch 5110, patch 5134, patch 5112
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Proofpoint | Enterprise Protection | 8.18.6 to before patch 5110; 8.20.6 to before patch 5134; 8.21.0 to before patch 5112 | patch 5110, patch 5134, patch 5112 | Patch available | CNA |
- Enterprise Protection VendorProofpoint Affected 8.18.6 to before patch 5110; 8.20.6 to before patch 5134; 8.21.0 to before patch 5112 Fixed in patch 5110, patch 5134, patch 5112 Patch available CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:proofpoint:enterprise_protection:8.18.6:*:*:*:-:*:*:* | 8.18.6 | Vulnerable | Proofpoint |
| cpe:2.3:a:proofpoint:enterprise_protection:8.20.6:*:*:*:-:*:*:* | 8.20.6 | Vulnerable | Proofpoint |
| cpe:2.3:a:proofpoint:enterprise_protection:8.21.0:*:*:*:-:*:*:* | 8.21.0 | Vulnerable | Proofpoint |
- cpe:2.3:a:proofpoint:enterprise_protection:8.18.6:*:*:*:-:*:*:* Versions 8.18.6 Vulnerable ·Proofpoint
- cpe:2.3:a:proofpoint:enterprise_protection:8.20.6:*:*:*:-:*:*:* Versions 8.20.6 Vulnerable ·Proofpoint
- cpe:2.3:a:proofpoint:enterprise_protection:8.21.0:*:*:*:-:*:*:* Versions 8.21.0 Vulnerable ·Proofpoint
Remediation
- Fix · CNA Enterprise Protection (Proofpoint) Fixed in patch 5110, patch 5134, patch 5112
Timeline
- 2026-10-02 Threatist record created from CVE-2024-10635
- 2026-10-03 Alias added: GHSA-47r3-rvvm-8c7f
References
More Proofpoint Enterprise Protection vulnerabilities
- TI-2023-00086 Proofpoint Enterprise Protection webservices unauthenticated RCE CVSS 3.1CRITICAL 9.8
- TI-2022-22879 Proofpoint Enterprise Protection (PPS/PoD) XSS in "Attachment Names" CVSS 3.1CRITICAL 9.6
- TI-2023-00085 Proofpoint Enterprise Protection webutils authenticated RCE CVSS 3.1HIGH 8.8
- TI-2019-14178 A file-extension filtering vulnerability in Proofpoint Enterprise Protection (PPS / PoD)… CVSS 3.1HIGH 8.8
- TI-2022-22880 Proofpoint Enterprise Protection perl eval() arbitrary command execution CVSS 3.1HIGH 7.2
- TI-2022-22881 Proofpoint Enterprise Protection Local Privilege Escalation CVSS 3.1HIGH 7.8
Sources
- CVE-2024-10635 · CVE Program
- CVE-2024-10635 · NVD
- FIRST EPSS
- GHSA-47r3-rvvm-8c7f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences