PT-2025-20660 · Unknown · Kkfileview

S0L42 · Published 2025-05-11 · Updated 2025-06-16 · CVE-2025-4538

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions kkFileView version 4.4.0

Description A critical issue affects an unknown part of the file /fileUpload. The manipulation of the File argument leads to unrestricted upload. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Recommendations For kkFileView version 4.4.0, as a temporary workaround, consider disabling the file upload functionality until a patch is available. Restrict access to the /fileUpload endpoint to minimize the risk of exploitation. Avoid using the File argument in the affected file upload functionality until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Access Control

Unrestricted File Upload

Weakness Enumeration

CWE-284

CWE-434

Related Identifiers

CVE-2025-4538

Affected Products

Kkfileview

References · 11

• 🔥 https://magnificent-dill-351.notion.site/Arbitrary-File-Upload-in-kkFileView-4-4-0-1e3c693918ed802581faccab9140a130 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-4538 · Security Note
• https://osv.dev/vulnerability/CVE-2025-4538 · Vendor Advisory
• https://twitter.com/dailycve/status/1934725764165034254 · Twitter Post
• https://vuldb.com/?ctiid.308283 · Note
• https://t.me/cvenotify/121672 · Telegram Post
• https://twitter.com/CVEnew/status/1921518232646693167 · Twitter Post
• https://vuldb.com/?submit.566596 · Note
• https://vuldb.com/?id.308283 · Note
• https://t.me/cvetracker/23579 · Telegram Post
• https://t.me/cvedetector/25046 · Telegram Post