High severity · published Nov 29, 2025
CVE-2025-53896
Kiteworks MFT is vulnerable to Insufficient Session Expiration
8.1
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
security-advisories · kiteworks
< 9.1.0 · source: vendor
KM
Kiteworks Managed File Transfer · Accellion
before 9.1.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-53896
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-53896
Patch
https://github.com/kiteworks/security-advisories/security/advisories/GHSA-23h2-3jj8-58hm
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