Splunk Enterprise/Secure Gateway REST API privileges management

Summaryinfo

A vulnerability, which was classified as problematic, was found in Splunk Enterprise and Secure Gateway. The affected element is an unknown function of the component REST API. Such manipulation leads to privileges management. This vulnerability is uniquely identified as CVE-2026-76257. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Splunk Enterprise and Secure Gateway (affected version not known). It has been rated as problematic. Affected by this issue is some unknown functionality of the component REST API. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality. CVE summarizes:

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway versions below 3.10.10, 3.9.24, and 3.8.71, a user who holds a Splunk role with permissions to list storage passwords but does not hold Splunk Secure Gateway administration privileges could access Mobile Device Management signing secrets that compromise all affected mobile-device enrollment trust through Splunk Secure Gateway. The vulnerability is possible because Splunk Secure Gateway Representational State Transfer (REST) API endpoints for deployment bundle, Security Assertion Markup Language setup, and companion app workflows do not require Splunk Secure Gateway administration privileges before processing requests.

The advisory is available at advisory.splunk.com. This vulnerability is handled as CVE-2026-76257 since 08/19/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/20/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Log Management Software

Vendor

• Splunk

Name

• Enterprise
• Secure Gateway

License

• commercial

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CPE 2.2info

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