# CVE-2025-53939: Kiteworks is a private data network (PDN). Prior to version 9.1.0, improper input validation when managing roles of a…

Source: https://junglewise.ai/threats/cve-2025-53939-kiteworks-is-a-private-data-network-pdn-prior-to-version-9-1-0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-11-29  
License: CC BY 4.0 with a link back

CVE-2025-53939 · Severity: medium · CVSS 6.3 · Published 2025-11-29

Kiteworks is a private data network (PDN). Prior to version 9.1.0, improper input validation when managing roles of a shared folder could lead to unexpectedly elevate another user's permissions on the share. This issue has been patched in version 9.1.0.

Vendors: [Accellion](https://junglewise.ai/threats/vendors/accellion).

## Quick answers

**Is CVE-2025-53939 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-53939 being exploited in the wild.

**How severe is CVE-2025-53939?** Medium severity, with a CVSS score of 6.3, published 29 November 2025.

**Which products and versions are affected?** Accellion Kiteworks. The advisory does not name versions.

**Is there a fix for CVE-2025-53939?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-53939?** Check whether you run Accellion Kiteworks. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Accellion Kiteworks