How severe is CVE-2025-66522?

CVE-2025-66522 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2025-66522 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66522?

CVE-2025-66522 affects Foxit Pdf Editor Cloud. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66522?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-66522 have an EU (EUVD) identifier?

Yes. CVE-2025-66522 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204454.

When was CVE-2025-66522 published?

CVE-2025-66522 was published on 2025-12-19 and last updated on 2026-06-17.

CVE-2025-66522

CVE-2025-66522 is a medium-severity vulnerability in Foxit Pdf Editor Cloud with a CVSS 3.x base score of 6.3. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204454
Weakness: CWE-79
Affected product: Foxit Pdf Editor Cloud
Published: 2025-12-19
Last modified: 2026-06-17

Description

A stored cross-site scripting (XSS) vulnerability exists in the Digital IDs functionality of the Foxit PDF Editor Cloud (pdfonline.foxit.com). The application does not properly sanitize or encode the Common Name field of Digital IDs before inserting user-supplied content into the DOM. As a result, embedded HTML or JavaScript may execute whenever the Digital IDs dialog is accessed or when the affected PDF is loaded.

Frequently asked questions

What is CVE-2025-66522?: A stored cross-site scripting (XSS) vulnerability exists in the Digital IDs functionality of the Foxit PDF Editor Cloud (pdfonline.foxit.com). The application does not properly sanitize or encode the Common Name field of Digital IDs before inserting user-supplied content into the DOM. As a result, embedded HTML or JavaScript may execute whenever the Digital IDs dialog is accessed or when the affected PDF is loaded.
How severe is CVE-2025-66522?: CVE-2025-66522 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2025-66522 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66522?: CVE-2025-66522 affects Foxit Pdf Editor Cloud. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66522?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-66522 have an EU (EUVD) identifier?: Yes. CVE-2025-66522 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204454.
When was CVE-2025-66522 published?: CVE-2025-66522 was published on 2025-12-19 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:foxit:pdf_editor_cloud:*:*:*:*:*:*:*:*

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