CVE-2019-20634 json
An issue was discovered in Proofpoint Email Protection through 2019-09-08.
published 2020-03-30 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-11173
- cvss
- 3.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 76%
- public exploits
- 0
- none known
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.
Exploit prediction
1.64% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-697 Incorrect Comparison
References
-
proofpoint.com
/us/security/CVE-2019-20634
vendor-advisory
-
proofpoint.com
/us/security/security-advisories/pfpt-sn-2020-0001
vendor-advisory
-
github.com
/moohax/Proof-Pudding
third-party-advisory
-
github.com
/moohax/Talks/blob/master/slides/DerbyCon19.pdf
third-party-advisory
- atlas.mitre.org /studies/AML.CS0008
Sources
- CVE List CVE-2019-20634
- NVD CVE-2019-20634
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