Use After Free in Foxit Reader
CVE-2019-6766
This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader 9.4.1.16828. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the removeField method when processing AcroForms. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-8162.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.027 (85.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- Foxit Reader — versions 9.4.1.16828
- Foxitsoftware Foxit Reader
- Foxitsoftware Phantompdf
- Microsoft Windows
Weakness classification (CWE)
References
- www.foxitsoftware.com/support/security-bulletins.php (Patch, Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-19-440/ (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-6766?
- CVE-2019-6766 is a medium-severity vulnerability in Foxit Reader, classified under Use After Free. CVSS score: 5.5/10. Published 2019-06-03.
- How severe is CVE-2019-6766?
- Medium severity. CVSS v3 base score is 5.5 out of 10.