CVE-2021-34844: Foxit PDF Reader Annotation Use-After-Free Remote Code Execution Vulnerability
First published: Wed Aug 04 2021(Updated: )
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-14033.
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Foxit PDF Reader | <=11.0.0.49893 | |
| Foxitsoftware Pdf Editor | <=10.1.4.37651 | |
| Foxitsoftware Pdf Editor | =11.0.0.49893 | |
| Microsoft Windows | ||
| Foxit PDF Reader |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is CVE-2021-34844?
CVE-2021-34844 is a vulnerability that allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893.
How can remote attackers exploit CVE-2021-34844?
Remote attackers can exploit CVE-2021-34844 by having the target visit a malicious page or open a malicious file.
Which software versions are affected by CVE-2021-34844?
Foxit PDF Reader 11.0.0.49893 and Foxitsoftware Pdf Editor 10.1.4.37651 are affected by CVE-2021-34844.
What is the severity of CVE-2021-34844?
CVE-2021-34844 has a severity rating of 7.8 (high).
How can I fix CVE-2021-34844?
To fix CVE-2021-34844, it is recommended to update Foxit PDF Reader to the latest version available.
- collector/nvd-index
- collector/zdi-advisory
- alias/ZDI-21-926
- alias/ZDI-CAN-14033
- alias/CVE-2021-34844
- agent/author
- agent/weakness
- agent/severity
- agent/references
- agent/title
- agent/tags
- agent/type
- agent/event
- agent/description
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- vendor/foxit
- canonical/foxit pdf reader
- version/foxit pdf reader/11.0.0.49893
- vendor/foxitsoftware
- canonical/foxitsoftware pdf editor
- version/foxitsoftware pdf editor/10.1.4.37651
- version/foxitsoftware pdf editor/11.0.0.49893
- vendor/microsoft
- canonical/microsoft windows