Use After Free in Foxit Pdf Reader
CVE-2021-34834
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. 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 handling of Annotation objects. 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 vulnerability to execute code in the context of the current process. Was ZDI-CAN-14014.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.031 (87.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000
Affected products
- Foxit Pdf Reader — versions 11.0.0.49893
- Foxit Pdf Reader
- Foxitsoftware Pdf Editor — versions 11.0.0.49893
- Microsoft Windows
Weakness classification (CWE)
References
- www.foxit.com/support/security-bulletins.html (Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-21-916/ (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-34834?
- CVE-2021-34834 is a high-severity vulnerability in Foxit Pdf Reader, classified under Use After Free. CVSS score: 7.8/10. Published 2021-08-04.
- How severe is CVE-2021-34834?
- High severity. CVSS v3 base score is 7.8 out of 10.