#VU106068 Inclusion of Sensitive Information in Log Files in Splunk Enterprise and Splunk Secure Gateway - CVE-2025-20231

Vulnerability identifier: #VU106068

Vulnerability risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-20231

CWE-ID: CWE-532

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Splunk Enterprise
Server applications / IDS/IPS systems, Firewalls and proxy servers
Splunk Secure Gateway
Server applications / Remote management servers, RDP, SSH

Vendor: Splunk Inc.

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to the Splunk Secure Gateway exposes user session and authorization tokens in clear text in the splunk_secure_gateway.log file when it calls the /services/ssg/secrets REST endpoint. A remote unprivileged user can gain access to authorization tokens and use them to compromise the affected system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Splunk Enterprise: 9.0.9 - 9.0.10, 9.1.3 - 9.1.7, 9.2.0 - 9.2.4, 9.3.0 - 9.3.2, 9.4.0

Splunk Secure Gateway: before 3.7.23

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External links
https://advisory.splunk.com/advisories/SVD-2025-0302

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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.