// For flags

CVE-2021-21893

 

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 11.0.0.49893. 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.

Se presenta una vulnerabilidad de uso de memoria previamente liberada en el motor JavaScript de Foxit Software's PDF Reader, versión 11.0.0.49893. Un documento PDF especialmente diseñado puede desencadenar el reuso de la memoria previamente liberada, que puede conllevar a una ejecución de código arbitrario. Un atacante necesita engañar al usuario para que abra el archivo malicioso para desencadenar esta vulnerabilidad. La explotación también es posible si un usuario visita un sitio malicioso especialmente diseñado si la extensión del plugin del navegador está habilitada

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-01-04 CVE Reserved
  • 2021-08-05 CVE Published
  • 2024-07-11 EPSS Updated
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-416: Use After Free
CAPEC
References (1)
URL Tag Source
URL Date SRC
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1336 2024-08-03
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Foxit
Search vendor "Foxit"
 Pdf Reader
Search vendor "Foxit" for product "Pdf Reader"
 11.0.0.49893
Search vendor "Foxit" for product "Pdf Reader" and version "11.0.0.49893"
-
Affected