CVE-2026-76257

Missing Authorization through REST API Endpoints in Splunk Secure Gateway

MEDIUM

6.5

CVSS Score

Published: August 19, 2026 at 09:34 PM UTC

Updated: October 26, 2026 at 10:10 AM UTC

2 products affected across 1 vendorSplunkSplunk Secure Gateway

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Splunk · Splunk

95%

10.0.0 ≤ v < 10.0.910.2.0 ≤ v < 10.2.610.4.0 ≤ v < 10.4.29.4.0 ≤ v < 9.4.1410.0 10.2 10.4 9.4

Affected range stops below 10.0.9, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.2.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.4.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.4.14, so it looks safe — our inference, not a vendor statement

Splunk Secure Gateway · Splunk

95%

3.10.0 ≤ v < 3.10.103.8.0 ≤ v < 3.8.713.9.0 ≤ v < 3.9.243.10 3.8 3.9

Affected range stops below 3.10.10, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.8.71, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.9.24, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://advisory.splunk.com/advisories/SVD-2026-0801

References (1)

Vendor Advisory

Source: cverecord

https://advisory.splunk.com/advisories/SVD-2026-0801

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMcisco

Vector?

Quick Info

StatusANALYZED

CWE

CWE-862

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