Is CVE-2025-53899 actively exploited?

CVE-2025-53899 has no public evidence of in-the-wild exploitation as of 2025-12-03.

What is the CVSS score for CVE-2025-53899?

CVE-2025-53899 has a CVSS score of 7.2 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2025-53899?

Patch guidance is available from accellion security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-53899.

Which products are affected by CVE-2025-53899?

1 product: accellion kiteworks managed file transfer.

Fix CVE-2025-53899 - HIGH | CVEDatabase.com

Description

Kiteworks MFT orchestrates end-to-end file transfer workflows. Prior to version 9.1.0, the back-end of Kiteworks MFT is vulnerable to an incorrectly specified destination in a communication channel which allows an attacker with administrative privileges on the system under certain circumstances to intercept upstream communication which could lead to an escalation of privileges. This issue has been patched in version 9.1.0.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: high
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-941

Metadata

Primary Vendor: ACCELLION
Published: 11/29/2025
Last Modified: 12/3/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2025-53899

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary