CVE-2018-21243

Name: CVE-2018-21243
Creator: NVD / NIST
Published: 2020-06-04T17:15:11.137+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2018-21243 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. An issue was discovered in Foxit PhantomPDF before 8.3.6. It has COM object mishandling when Microsoft Word is used.. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

An issue was discovered in Foxit PhantomPDF before 8.3.6. It has COM object mishandling when Microsoft Word is used.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.90%

55.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Foxitsoftware	Phantompdf	< 8.3.6

References

https://www.foxitsoftware.com/support/security-bulletins.phpVendor Advisory
https://www.foxitsoftware.com/support/security-bulletins.phpVendor Advisory

Timeline

Published: Jun 4, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-21243?

An issue was discovered in Foxit PhantomPDF before 8.3.6. It has COM object mishandling when Microsoft Word is used.

How severe is CVE-2018-21243?

CVE-2018-21243 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2018-21243?

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-2018-21243?

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

Scan your code now

Source: NVD / NIST