Is CVE-2026-28270 actively exploited?

CVE-2026-28270 has no public evidence of in-the-wild exploitation as of 2026-03-04.

What is the CVSS score for CVE-2026-28270?

CVE-2026-28270 has a CVSS score of 4.9 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.

How do I patch CVE-2026-28270?

Patch guidance is available from accellion security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-28270.

Which products are affected by CVE-2026-28270?

1 product: accellion kiteworks.

CVE-2026-28270 - remediation guidance & executive summary

Description

Kiteworks is a private data network (PDN). Prior to version 9.2.0, a vulnerability in Kiteworks configuration allows uploading of arbitrary files without proper validation. Malicious administrators could exploit this to upload unauthorized file types to the system. Version 9.2.0 contains a patch for the issue.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Attack Vector: network
Complexity: low
Privileges: high
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: none
Weaknesses: CWE-434 · Unrestricted File Upload

Metadata

Primary Vendor: ACCELLION
Published: 2/27/2026
Last Modified: 3/4/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-28270

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary