#VU106063 Arbitrary file upload in Splunk Enterprise - CVE-2025-20229

Vulnerability identifier: #VU106063

Vulnerability risk: Medium

CVSSv4.0: 6.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-20229

CWE-ID: CWE-434

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Splunk Enterprise
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Splunk Inc.

Description

The vulnerability allows a remote user to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload. A remote unprivileged user can upload a malicious file into the "$SPLUNK_HOME/var/run/splunk/apptemp" directory and execute it on the server.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Splunk Enterprise: 9.0.0 - 9.0.10, 9.1.0 - 9.1.7, 9.2.0 - 9.2.4, 9.3.0 - 9.3.2

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External links
https://advisory.splunk.com/advisories/SVD-2025-0301

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.