How severe is CVE-2026-3780?

CVE-2026-3780 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-3780 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3780?

CVE-2026-3780 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-2026-3780?

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-2026-3780 have an EU (EUVD) identifier?

Yes. CVE-2026-3780 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17761.

When was CVE-2026-3780 published?

CVE-2026-3780 was published on 2026-04-01 and last updated on 2026-06-17.

CVE-2026-3780

CVE-2026-3780 is a high-severity vulnerability in Foxit Pdf Editor with a CVSS 3.x base score of 7.3. 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-426.

Key facts

Severity: High (CVSS 3.x base score 7.3)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17761
Weakness: CWE-426
Affected product: Foxit Pdf Editor
Published: 2026-04-01
Last modified: 2026-06-17

Description

The application's installer runs with elevated privileges but resolves system executables and DLLs using untrusted search paths that can include user-writable directories, allowing a local attacker to place malicious binaries with the same names and have them loaded or executed instead of the legitimate system files, resulting in local privilege escalation.

Frequently asked questions

What is CVE-2026-3780?: The application's installer runs with elevated privileges but resolves system executables and DLLs using untrusted search paths that can include user-writable directories, allowing a local attacker to place malicious binaries with the same names and have them loaded or executed instead of the legitimate system files, resulting in local privilege escalation.
How severe is CVE-2026-3780?: CVE-2026-3780 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-3780 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3780?: CVE-2026-3780 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-2026-3780?: 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-2026-3780 have an EU (EUVD) identifier?: Yes. CVE-2026-3780 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17761.
When was CVE-2026-3780 published?: CVE-2026-3780 was published on 2026-04-01 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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