CVE-2018-3843

Name: CVE-2018-3843
Creator: NVD / NIST
Published: 2018-04-19T19:29:00.297+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 24.03%

Last modified Jun 17, 2026

CVE-2018-3843 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An exploitable type confusion vulnerability exists in the way Foxit PDF Reader version 9.0.1.1049 parses files with associated file annotations. A specially crafted PDF document can lead to an object of invalid type to be dereferenced, which can potentially lead to sensitive memory disclosure, and possibly to arbitrary code execution. EPSS estimates a 24.03% chance of exploitation in the next 30 days.

Description

An exploitable type confusion vulnerability exists in the way Foxit PDF Reader version 9.0.1.1049 parses files with associated file annotations. A specially crafted PDF document can lead to an object of invalid type to be dereferenced, which can potentially lead to sensitive memory disclosure, and possibly to arbitrary code execution. An attacker needs to trick the user into opening the malicious file to trigger this vulnerability. If the browser plugin extension is enabled, visiting a malicious site can also trigger the vulnerability.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

24.03%

97.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-704

Affected Software

Vendor	Product	Versions
Foxitsoftware	Foxit Reader	9.0.1.1049

References

http://www.securityfocus.com/bid/103942Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040733Broken Link, Third Party Advisory, VDB Entry
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0526Exploit, Third Party Advisory
http://www.securityfocus.com/bid/103942Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040733Broken Link, Third Party Advisory, VDB Entry
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0526Exploit, Third Party Advisory

Timeline

Published: Apr 19, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-3843?

How severe is CVE-2018-3843?

CVE-2018-3843 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 24.03% probability of exploitation in the next 30 days.

How do I fix CVE-2018-3843?

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-2018-3843?

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

Scan your code now

Source: NVD / NIST