CVE-2026-14892
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Improper Access Controls in Tanium Server

Publication date: 2026-09-09

Last updated on: 2026-09-09

Assigner: Tanium

Description
Tanium addressed an improper access controls vulnerability in Tanium Server.

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Meta Information

Published
2026-09-09
Last Modified
2026-09-09
Generated
2026-09-29
AI Q&A
2026-09-09
EPSS Evaluated
2026-09-27
NVD
CVE-2026-14892
EUVD
EUVD-2026-74553

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
tanium tanium_server to 7.7.3.8298 (exc)
tanium tanium_server to 7.8.2.1198 (exc)
tanium tanium_server to 7.8.4.1327 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

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Executive Summary

This vulnerability is an improper access controls issue in Tanium Server. It allows an authenticated Tanium user to perform a denial of service attack against the server. The vulnerability affects specific versions of Tanium Server prior to certain updates in the 2025H1, 2025H2, and 2026H1 releases.

Detection Guidance

Detection involves checking Tanium Server versions against affected releases. Verify installed version using Tanium Console or server logs. Compare with versions v7.7.3.8298 (2025H1), v7.8.2.1198 (2025H2), and v7.8.4.1327 (2026H1). If running older versions, update immediately.

Impact Analysis

If exploited, this vulnerability could disrupt the availability of the Tanium Server by causing a denial of service. This may lead to system downtime, reduced productivity, and potential loss of access to critical server functions for users.

Compliance Impact

The vulnerability allows an authenticated user to perform a denial of service attack against Tanium Server, which could disrupt system availability. This may impact compliance with standards requiring data availability, such as GDPR (Article 32) and HIPAA (Security Rule), if the attack leads to prolonged downtime or loss of access to critical systems.

Mitigation Strategies

Apply the latest updates for your Tanium Server version: Update 21 or later for 2025H1, Update 11 or later for 2025H2, or Update 3 or later for 2026H1. No workarounds are provided.

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