Vulnerability in Accellion Kiteworks Managed File Transfer
CVE-2025-53896
Kiteworks MFT orchestrates end-to-end file transfer workflows. Prior to version 9.1.0, a bug in Kiteworks MFT could cause under certain circumstances that a user's active session would not properly time out due to inactivity. This issue has been patched in version 9.1.0.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (8.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 8.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Accellion Kiteworks Managed File Transfer
- Kiteworks Security-Advisories — versions < 9.1.0
Weakness classification (CWE)
References
- github.com/kiteworks/security-advisories/security/advisories/GHSA-23h2-3jj8-58hm (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-53896?
- CVE-2025-53896 is a high-severity vulnerability in Accellion Kiteworks Managed File Transfer, classified under Insufficient Session Expiration. CVSS score: 7.1/10. Published 2025-11-29.
- How severe is CVE-2025-53896?
- High severity. CVSS v3 base score is 7.1 out of 10.