CVE-2021-40420

Summary

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 11.1.0.52543. 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.

Affected Software

Weaknesses

• CWE-416: CWE-416: Use After Free

ADP Enrichment

CVE Program Container

Additional References

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1429

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: total

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1429

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