What is CVE-2025-53939?

CVE-2025-53939 is a medium-severity vulnerability in Accellion Kiteworks, classified under Improper Input Validation. CVSS score: 6.3/10. Published 2025-11-29.

How severe is CVE-2025-53939?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Improper input validation in Accellion Kiteworks

CVE-2025-53939

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…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.007 (47.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Accellion Kiteworks
Kiteworks Security-advisories — versions < 9.1.0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2025-53939?: CVE-2025-53939 is a medium-severity vulnerability in Accellion Kiteworks, classified under Improper Input Validation. CVSS score: 6.3/10. Published 2025-11-29.
How severe is CVE-2025-53939?: Medium severity. CVSS v3 base score is 6.3 out of 10.