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CVE-2019-20634
An issue was discovered in Proofpoint Email Protection through 2019-09-08. By collecting scores from Proofpoint email headers, it is…
Low3.7EPSS 1.6%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| mitreCNA (assigner) | 3.1 | Low3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVDNVD · Modified | 3.1 | Low3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 1.6% · top 24% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.7.
Weakness
Affected products
n/a
- affected n/a
References (5)
- https://github.com/moohax/Proof-Pudding (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/moohax/Talks/blob/master/slides/DerbyCon19.pdf (opens in a new tab)x_refsource_MISCx_transferred
- https://www.proofpoint.com/us/security/CVE-2019-20634 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.proofpoint.com/us/security/security-advisories/pfpt-sn-2020-0001 (opens in a new tab)x_refsource_MISCx_transferred
- https://atlas.mitre.org/studies/AML.CS0008 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2019-20634)Record last updated .