CVE-2021-21831
Last modified
CVE-2021-21831 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.3.37598. A specially crafted PDF document can trigger the reuse of previously freed memory, which can lead to arbitrary code execution. EPSS estimates a 4.51% chance of exploitation in the next 30 days.
Description
A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.3.37598. A specially crafted PDF document can trigger the reuse of previously freed memory, which can lead to arbitrary code execution. An attacker needs to trick the user to open the malicious file to trigger this vulnerability. Exploitation is also possible if a user visits a specially crafted, malicious site if the browser plugin extension is enabled.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Foxit | Pdf Reader | 10.1.3.37598 |
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1294Exploit, Third Party Advisory
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1294Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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