How severe is CVE-2021-34968?

CVE-2021-34968 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-34968 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34968?

CVE-2021-34968 primarily affects Foxit Pdf Editor. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-34968?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2021-34968 have an EU (EUVD) identifier?

Yes. CVE-2021-34968 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-21615.

When was CVE-2021-34968 published?

CVE-2021-34968 was published on 2024-05-07 and last updated on 2026-06-17.

CVE-2021-34968

CVE-2021-34968 is a high-severity vulnerability in Foxit Pdf Editor with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2021-21615
Weakness: CWE-416
Affected product: Foxit Pdf Editor
Published: 2024-05-07
Last modified: 2026-06-17

Description

Foxit PDF Editor transitionToState 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 implementation of the transitionToState method. 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-14370.

Frequently asked questions

What is CVE-2021-34968?: Foxit PDF Editor transitionToState 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 implementation of the transitionToState method. 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-14370.
How severe is CVE-2021-34968?: CVE-2021-34968 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-34968 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34968?: CVE-2021-34968 primarily affects Foxit Pdf Editor. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-34968?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2021-34968 have an EU (EUVD) identifier?: Yes. CVE-2021-34968 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-21615.
When was CVE-2021-34968 published?: CVE-2021-34968 was published on 2024-05-07 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:11.0.0.49893:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:11.0.1.49938:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*

More vulnerabilities in Foxit Pdf Editor

CVE-2022-28104 — Critical (CVSS 9.8): Foxit PDF Editor v11.3.1 was discovered to contain an arbitrary file upload vulnerability.
CVE-2022-24955 — Critical (CVSS 9.8): Foxit PDF Reader before 11.2.1 and Foxit PDF Editor before 11.2.1 have an Uncontrolled Search Path Element for DLL…
CVE-2022-24954 — Critical (CVSS 9.8): Foxit PDF Reader before 11.2.1 and Foxit PDF Editor before 11.2.1 have a Stack-Based Buffer Overflow related to XFA,…
CVE-2025-13941 — High (CVSS 8.8): A local privilege escalation vulnerability exists in the Foxit PDF Reader/Editor Update Service. During plugin…
CVE-2024-49576 — High (CVSS 8.8): A use-after-free vulnerability exists in the way Foxit Reader 2024.3.0.26795 handles a checkbox CBF_Widget object. A…
CVE-2024-47810 — High (CVSS 8.8): A use-after-free vulnerability exists in the way Foxit Reader 2024.3.0.26795 handles a 3D page object. A specially…

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Other CWE-416 (Use After Free) vulnerabilities

CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…

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