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CRITICAL

Kaseya < 6.3.0.2 uploadImage.asp Arbitrary File Upload RCE

Published Jul 31, 2025

Description

An unrestricted file upload vulnerability exists in Kaseya KServer versions prior to 6.3.0.2. The uploadImage.asp endpoint allows unauthenticated users to upload files to arbitrary paths via a crafted filename parameter in a multipart/form-data POST request. Due to the lack of authentication and input sanitation, an attacker can upload a file with an .asp extension to a web-accessible directory, which can then be invoked to execute arbitrary code with the privileges of the IUSR account. The vulnerability enables remote code execution without prior authentication and was resolved in version 6.3.0.2 by removing the vulnerable uploadImage.asp endpoint.

Affected products

Remediation

No remediation recorded yet.

Metrics

References (4)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner VulnCheck
Published Jul 31, 2025
Updated May 15, 2026
Reserved Jul 30, 2025
CISA Vulnrichment
Updated Jul 31, 2025
NVD
Status Deferred
Modified Jun 16, 2026
Red Hat
Severity n/a
Public date n/a