CVE-2025-15312
Unknown Unknown - Not Provided
Improper Output Sanitization in Tanium Appliance Risks Data Exposure

Publication date: 2026-02-05

Last updated on: 2026-02-10

Assigner: Tanium

Description
Tanium addressed an improper output sanitization vulnerability in Tanium Appliance.
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Meta Information
Published
2026-02-05
Last Modified
2026-02-10
Generated
2026-06-16
AI Q&A
2026-02-05
EPSS Evaluated
2026-06-15
NVD
CVE-2025-15312
EUVD
EUVD-2025-206830
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
tanium tanos From 1.8.3 (inc) to 1.8.3.0146 (exc)
tanium tanos From 1.8.4 (inc) to 1.8.4.0157 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-116 The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.
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Executive Summary

[{'type': 'paragraph', 'content': "CVE-2025-15312 is an improper output sanitization vulnerability in Tanium's TanOS operating system. This flaw allows an authenticated TanOS user to execute unauthorized code on a Tanium Appliance."}, {'type': 'paragraph', 'content': 'The vulnerability affects TanOS versions 1.8.3 prior to 1.8.3.0146 and 1.8.4 prior to 1.8.4.0157. The issue has been addressed in later versions.'}] [1]

Impact Analysis

This vulnerability can allow an authenticated user with high privileges to execute unauthorized code on a Tanium Appliance, potentially compromising the confidentiality, integrity, and availability of the system.

  • Confidentiality impact: High
  • Integrity impact: High
  • Availability impact: High
Mitigation Strategies

The vulnerability is addressed in TanOS versions 1.8.3.0146 and later, and 1.8.4.0157 and later.

Immediate steps include upgrading affected TanOS versions to these fixed versions or later.

No workarounds or other mitigations are available.

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