How severe is CVE-2026-5943?

CVE-2026-5943 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-2026-5943 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5943?

CVE-2026-5943 primarily affects Foxit Pdf Editor. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-5943?

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-2026-5943 have an EU (EUVD) identifier?

Yes. CVE-2026-5943 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25829.

When was CVE-2026-5943 published?

CVE-2026-5943 was published on 2026-04-27 and last updated on 2026-06-17.

CVE-2026-5943

CVE-2026-5943 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% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25829
Weakness: CWE-416
Affected product: Foxit Pdf Editor
Published: 2026-04-27
Last modified: 2026-06-17

Description

Document structural anomalies caused inconsistencies between page element relationships and internal index states. When scripts triggered document modifications, object reference validity was not properly maintained, leading to a crash when accessing an invalid pointer during page information queries.

Frequently asked questions

What is CVE-2026-5943?: Document structural anomalies caused inconsistencies between page element relationships and internal index states. When scripts triggered document modifications, object reference validity was not properly maintained, leading to a crash when accessing an invalid pointer during page information queries.
How severe is CVE-2026-5943?: CVE-2026-5943 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-2026-5943 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5943?: CVE-2026-5943 primarily affects Foxit Pdf Editor. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-5943?: 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-2026-5943 have an EU (EUVD) identifier?: Yes. CVE-2026-5943 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25829.
When was CVE-2026-5943 published?: CVE-2026-5943 was published on 2026-04-27 and last updated on 2026-06-17.

References

https://www.foxit.com/support/security-bulletins.html

Affected products (2)

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

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