CVE-2020-14009

Name: CVE-2020-14009
Creator: NVD / NIST
Published: 2021-05-07T12:15:07.107+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.3/10EPSS 0.32%

Last modified Jun 17, 2026

CVE-2020-14009 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. Proofpoint Enterprise Protection (PPS/PoD) before 8.16.4 contains a vulnerability that could allow an attacker to deliver an email message with a malicious attachment that bypasses scanning and file-blocking rules. The vulnerability exists because messages with certain crafted and malformed multipart structures are not properly handled.. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

Description

Proofpoint Enterprise Protection (PPS/PoD) before 8.16.4 contains a vulnerability that could allow an attacker to deliver an email message with a malicious attachment that bypasses scanning and file-blocking rules. The vulnerability exists because messages with certain crafted and malformed multipart structures are not properly handled.

Metrics

CVSS 3.1

6.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

EPSS Probability

0.32%

23.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-354

Affected Software

Vendor	Product	Versions
Proofpoint	Enterprise Protection	< 8.13.16
Proofpoint	Enterprise Protection	>= 8.14.0, < 8.16.4

References

https://www.proofpoint.com/us/security/security-advisoriesVendor Advisory
https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2021-0006Vendor Advisory
https://www.proofpoint.com/us/security/security-advisoriesVendor Advisory
https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2021-0006Vendor Advisory

Timeline

Published: May 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-14009?

How severe is CVE-2020-14009?

CVE-2020-14009 has a CVSS score of 6.3/10 (MEDIUM severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.

How do I fix CVE-2020-14009?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-14009?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST