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TI-2021-13947 Aliases CVE-2021-34957GHSA-rhrf-fqx5-c58p

Use after free in Foxit PDF Editor

Priority LOW 36CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

Foxit PDF Editor Highlight Annotation Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Editor. 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-14358.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00349 28th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FoxitPDF Editor11.0.0.49893—No fix listedCNA
  • PDF Editor VendorFoxit Affected 11.0.0.49893 Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*up to 10.1.5.37672VulnerableFoxit
cpe:2.3:a:foxit:pdf_editor:11.0.0.49893:*:*:*:*:*:*:*11.0.0.49893VulnerableFoxit
cpe:2.3:a:foxit:pdf_editor:11.0.1.49938:*:*:*:*:*:*:*11.0.1.49938VulnerableFoxit
cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*up to 11.0.1.49938VulnerableFoxit
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
  • cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:* Versions up to 10.1.5.37672 Vulnerable ·Foxit
  • cpe:2.3:a:foxit:pdf_editor:11.0.0.49893:*:*:*:*:*:*:* Versions 11.0.0.49893 Vulnerable ·Foxit
  • cpe:2.3:a:foxit:pdf_editor:11.0.1.49938:*:*:*:*:*:*:* Versions 11.0.1.49938 Vulnerable ·Foxit
  • cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:* Versions up to 11.0.1.49938 Vulnerable ·Foxit
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-34957
  2. 2026-10-03 Alias added: GHSA-rhrf-fqx5-c58p

References

Advisory 2

  • TI-2024-33074 Use after free in Foxit Reader CVSS 3.1HIGH 8.8
  • TI-2024-32078 Use after free in Foxit Reader CVSS 3.1HIGH 8.8
  • TI-2024-17038 Use after free in Foxit Reader CVSS 3.1HIGH 8.8
  • TI-2024-16876 Use after free in Foxit Reader CVSS 3.1HIGH 8.8
  • TI-2024-16809 Type confusion in Foxit Reader CVSS 3.1HIGH 8.8
  • TI-2023-12098 Foxit PDF Reader exportXFAData Exposed Dangerous Method Remote Code Execution… CVSS 3.0HIGH 7.8
See all 329 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences