An issue was discovered in Proofpoint Email Protection through 2019-09-08.
Priority LOW 21CWE-697Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
An issue was discovered in Proofpoint Email Protection through 2019-09-08. By collecting scores from Proofpoint email headers, it is possible to build a copy-cat Machine Learning Classification model and extract insights from this model. The insights gathered allow an attacker to craft emails that receive preferable scores, with a goal of delivering malicious emails.
Why it matters now
EPSS 0.01636 76th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:proofpoint:email_protection:*:*:*:*:*:*:*:* | up to 2019-09-08 | Vulnerable | Proofpoint |
- cpe:2.3:a:proofpoint:email_protection:*:*:*:*:*:*:*:* Versions up to 2019-09-08 Vulnerable ·Proofpoint
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-20634
- 2026-10-03 Alias added: GHSA-f9h8-wxp6-hpxv
References
Sources
- CVE-2019-20634 · CVE Program
- CVE-2019-20634 · NVD
- FIRST EPSS
- GHSA-f9h8-wxp6-hpxv · 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