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Tanium Discover CVE-2026-116665

| EUVDEUVD-2026-116549 MEDIUM
Information Exposure (CWE-200)
2026-11-03 Tanium
4.3
CVSS 3.1 · Vendor: Tanium
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate to Tanium platform with low privileges
  2. Exploit
    Access Discover module over network
  3. Execution
    Trigger information disclosure flaw
  4. Impact
    Obtain unauthorized sensitive data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection Data exposure prevention
MITRE ATT&CK

2 techniques across 2 tactics: Collection, Discovery

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires an authenticated account on the Tanium platform (PR:L) with network access to the Discover module; no user interaction is needed. The specific feature, configuration, or request that triggers the disclosure is not described in the available sources. Exploitation is limited by the authentication requirement and by the impact being confined to partial confidentiality (C:L) - no integrity or availability effect - meaning a valid low-privilege foothold is a prerequisite rather than fully unauthenticated remote access.

Impact

This is a moderate-severity, low-priority issue rather than an urgent one. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N, base 4.3) indicates a network-reachable but authenticated (PR:L) information disclosure with only low confidentiality impact and no integrity or availability effect. The vendor-assigned priority is 'this_month', consistent with a non-emergency fix. There is no CISA KEV listing and no public exploit or PoC reference in the supplied data (only the vendor advisory TAN-2026-094), so exploitation status is 'no public exploit identified at time of analysis'. No EPSS score was provided, so real-world exploitation probability cannot be quantified from this input. The limiting factors - required authentication and only partial confidentiality impact - keep real risk well below what a raw 'network vector' reading might suggest. The chief gap is that the description does not state what information is disclosed or how the flaw is triggered; verify affected versions and the nature of the disclosed data with the Tanium advisory before prioritizing.

Exploit ScenarioDerived

An authenticated low-privilege user of the Tanium platform interacts with the Discover module over the network and is able to read information they should not be authorized to see, resulting in disclosure of sensitive data. The trigger mechanism is not described in the available sources, and no public exploit or PoC was identified at the time of analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available

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AnalysisAIv1 – Nov 03, 2026

Information disclosure in Tanium Discover allows an authenticated, low-privilege user with network access to obtain limited confidential information from the platform (CVSS 4.3, C:L). Tanium addressed the issue in its Discover module; the affected CPE covers Tanium Discover with no specific version range enumerated in the available data. No public exploit identified at time of analysis, and the vendor-reported severity plus the PR:L requirement keep this a moderate, this-month priority rather than an emergency.

RemediationAI

Apply the fix referenced in Tanium security advisory TAN-2026-094 (https://security.tanium.com/TAN-2026-094); the provided data does not include an exact fixed version number, so consult the advisory for the patched release appropriate to your deployment. Because exploitation requires an authenticated account (PR:L), restrict access to the Discover module to trusted users and monitor for unexpected disclosure activity until the update is applied. No other vendor-stated workarounds are included in the available sources.

Affected VersionsENISA

Discover 4.15.0 <4.15.218
Discover 4.10.0 <4.10.204
Discover 4.19.0 <4.19.137

Affected Packages

euvd discover fix: 4.10.204, 4.15.218, 4.19.137

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability is classified as CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) in the Tanium Discover asset-discovery module. CPE data identifies the affected product as tanium:discover with a wildcard version, meaning the supplied sources do not enumerate specific affected builds. The CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N describes a network-reachable flaw that requires an authenticated account but no user interaction, with impact limited to partial confidentiality; integrity and availability are unaffected. The precise feature, configuration, or request that triggers the disclosure is not described in the available sources.

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Severity by source

Vendor (Tanium) PRIMARY 4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
vuln.today AI 4.3 MEDIUM

Network-reachable module requiring an authenticated low-privilege account (PR:L), no user interaction, yielding only partial confidentiality loss with no integrity or availability impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Tanium).

CVSS VectorVendor: Tanium

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

1
Patch available
Nov 03, 2026 - 23:19 EUVD

DescriptionCVE.org

Tanium addressed an information disclosure vulnerability in Discover.

Threat Intelligence Overview

Prevalence
Medium
enterprise endpoint-management platform, significant but not universal deployment
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS N/A
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

22
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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References

Advisories & patches

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