CVE-2018-18689

Description

The Portable Document Format (PDF) specification does not provide any information regarding the concrete procedure of how to validate signatures. Consequently, a Signature Wrapping vulnerability exists in multiple products. An attacker can use /ByteRange and xref manipulations that are not detected by the signature-validation logic. This affects Foxit Reader before 9.4 and PhantomPDF before 8.3.9 and 9.x before 9.4. It also affects eXpert PDF 12 Ultimate, Expert PDF Reader, Nitro Pro, Nitro Reader, PDF Architect 6, PDF Editor 6 Pro, PDF Experte 9 Ultimate, PDFelement6 Pro, PDF Studio Viewer 2018, PDF Studio Pro, PDF-XChange Editor and Viewer, Perfect PDF 10 Premium, Perfect PDF Reader, Soda PDF, and Soda PDF Desktop.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.01%
Vendor Advisory foxitsoftware.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.foxitsoftware.com/support/security-bulletins.php vendor advisory
https://pdf-insecurity.org/signature/evaluation_2018.html third party advisory
https://pdf-insecurity.org/signature/signature.html third party advisory
https://www.pdfa.org/recently-identified-pdf-digital-signature-vulnerabilities/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-18689?
CVE-2018-18689 has been scored as a medium severity vulnerability.
How to fix CVE-2018-18689?
To fix CVE-2018-18689, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-18689 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-18689 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.