How severe is CVE-2025-66502?

CVE-2025-66502 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-2025-66502 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66502?

CVE-2025-66502 affects Foxit Pdf Editor Cloud. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66502?

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

Does CVE-2025-66502 have an EU (EUVD) identifier?

Yes. CVE-2025-66502 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204458.

When was CVE-2025-66502 published?

CVE-2025-66502 was published on 2025-12-19 and last updated on 2026-06-17.

CVE-2025-66502

CVE-2025-66502 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% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204458
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 pdfonline.foxit.com within the Page Templates feature. A crafted payload can be stored as the template name, which is later rendered into the DOM without proper sanitization. As a result, the injected script executes each time the affected PDF is loaded.

Frequently asked questions

What is CVE-2025-66502?: A stored cross-site scripting (XSS) vulnerability exists in pdfonline.foxit.com within the Page Templates feature. A crafted payload can be stored as the template name, which is later rendered into the DOM without proper sanitization. As a result, the injected script executes each time the affected PDF is loaded.
How severe is CVE-2025-66502?: CVE-2025-66502 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-2025-66502 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66502?: CVE-2025-66502 affects Foxit Pdf Editor Cloud. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66502?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-66502 have an EU (EUVD) identifier?: Yes. CVE-2025-66502 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204458.
When was CVE-2025-66502 published?: CVE-2025-66502 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:*:*:*:*:*:*:*:*

More vulnerabilities in Foxit Pdf Editor Cloud

CVE-2026-1592 — Medium (CVSS 6.3): Foxit PDF Editor Cloud (pdfonline) contains a stored cross-site scripting vulnerability in the Create New Layer…
CVE-2026-1591 — Medium (CVSS 6.3): Foxit PDF Editor Cloud (pdfonline) contains a stored cross-site scripting vulnerability in the file upload feature. A…
CVE-2025-66522 — Medium (CVSS 6.3): A stored cross-site scripting (XSS) vulnerability exists in the Digital IDs functionality of the Foxit PDF Editor Cloud…
CVE-2025-66521 — Medium (CVSS 6.3): A stored cross-site scripting (XSS) vulnerability exists in pdfonline.foxit.com within the Trusted Certificates…
CVE-2025-66520 — Medium (CVSS 6.3): A stored cross-site scripting (XSS) vulnerability exists in the Portfolio feature of the Foxit PDF Editor cloud…
CVE-2025-66519 — Medium (CVSS 6.3): A stored cross-site scripting (XSS) vulnerability exists in pdfonline.foxit.com within the Layer Import functionality.…

All CVEs affecting Foxit Pdf Editor Cloud →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →