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Tanium Enforce CVE-2026-116649

| EUVDEUVD-2026-111253 HIGH
Improper Neutralization of Formula Elements in a CSV File (CWE-1236)
2026-10-27 Tanium GHSA-qcq7-8gh3-6qwq
7.1
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
    Reach Enforce web interface
  2. Delivery
    Inject crafted content into unsanitized output field
  3. Exploit
    Victim operator views or exports affected data
  4. Execution
    Malicious output processed in victim context
  5. Impact
    Low-impact information disclosure across scope boundary

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V1 - Encoding and Sanitization CSV injection prevention
Exploitation Conditions

Exploitation targets the Tanium Enforce component and, per CVSS UI:R, requires a legitimate user to interact with the maliciously-crafted output (e.g., viewing or exporting affected data in the Enforce console) - this user-interaction requirement is the primary limiting factor. The affected versions are Enforce 2.9 before 2.9.736, 2.10 before 2.10.778, and 3.0 before 3.0.373; deployments at or above those fixed builds are not affected. The supplied vector marks the flaw network-reachable with no attacker privileges (AV:N/PR:N), but the exact feature, field, or configuration where the unsanitized output is produced is not described in the available sources, and whether injecting the payload itself requires prior authenticated access to Enforce is unverified.

Impact

This is a moderate-severity issue (CVSS 7.1) that the vuln.today priority engine rates as 'this_week' rather than an emergency - a reasonable middle-ground. The supplied CVSS vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L) describes a network-reachable, low-complexity flaw needing no attacker privileges but requiring victim user interaction (UI:R), with a scope change and only Low impact to confidentiality, integrity, and availability. No EPSS score, CISA KEV listing, or SSVC exploitation-status data was supplied, and no public exploit or PoC reference appears in the input, so there is no public exploit identified at time of analysis. The CWE (CWE-1236, formula/output neutralization) plus the 'Information Disclosure' tag and 'improper output sanitization' description point to an injection-of-crafted-output class of bug (e.g., content rendered unsafely to another user or export), consistent with the scope change and the required user interaction. The combination - unauthenticated-per-vector but dependent on a victim's action, and only Low triple impact - means this is a genuine but not drop-everything priority; the limiting factor is UI:R. One caveat: the vector lists PR:N, but 'output sanitization' flaws in a management product like Enforce often require authenticated access to inject the payload in the first place; the description does not confirm the trigger, so the true privilege requirement is unverified. Patch availability from the vendor makes remediation the clear priority signal.

Exploit ScenarioDerived

An attacker seeds crafted, improperly-sanitized content into Tanium Enforce such that when a legitimate operator later views or exports the affected output in the console, the malicious content is processed, disclosing information or acting within the victim's session (scope change). Exploitation requires that victim interaction (UI:R), and the precise injection point and trigger are not described in the available sources. No public exploit code was identified in the provided data.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 28, 2026

Improper output sanitization in Tanium Enforce 2.9, 2.10, and 3.0 allows a network-reachable attacker to craft malicious output that can lead to limited information disclosure and integrity impact when a legitimate user views or exports affected data (CVSS 7.1). The CVSS vector indicates no required privileges (PR:N) but user interaction (UI:R) is required, and whether injecting the payload itself requires prior authenticated access to Enforce is unverified; no public exploit identified at time of analysis. Tanium has released fixed builds in Enforce 2.9.736, 2.10.778, and 3.0.373, and the vuln.today priority engine rates remediation as 'this_week'.

RemediationAI

Upgrade Tanium Enforce to a fixed build: 2.9.736 for the 2.9 branch, 2.10.778 for the 2.10 branch, or 3.0.373 for the 3.0 branch; deployments at or above those versions are not affected. The vendor advisory is at https://security.tanium.com/TAN-2026-072. No specific workaround is described in the available sources, so applying the vendor patch is the complete remediation. No public exploit identified at time of analysis, but the UI:R requirement means users should be cautious when opening exported or shared Enforce output until patched.

Affected VersionsENISA

Enforce 2.10 <2.10.778
Enforce 3.0 <3.0.373
Enforce 2.9 <2.9.736

Affected Packages

euvd enforce fix: 2.9.736, 2.10.778, 3.0.373

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

Tanium Enforce is the affected product (CPE cpe:2.3:a:tanium:enforce:*:*:*:*:*:*:*:*), with fixes in 2.9.736, 2.10.778, and 3.0.373. CWE-1236 (Improper Neutralization of Formula Elements in a Spreadsheet) points to an output-sanitization failure in spreadsheet-compatible output, where untrusted data is written without neutralizing leading formula characters such as =, +, -, or @; this is consistent with the advisory's description of improper output sanitization and the independent assessment's note that a user must view or export affected data. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L) marks network reachability, low complexity, no required privileges, and changed scope, but the UI:R requirement is the primary limiting factor. The exact feature, field, or configuration that produces the unsanitized output is not described in the available sources, and whether injecting the payload requires prior authenticated access to Enforce is unverified.

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Severity by source

Vendor (Tanium) PRIMARY 7.1 HIGH
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
vuln.today AI 7.1 HIGH

Network-reachable output flaw needing victim interaction (UI:R) and crossing a trust boundary (S:C) with only Low C/I/A; trigger undescribed so I retain PR:N but flag it as unverified.

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

Primary rating from Vendor (Tanium).

CVSS VectorVendor: Tanium

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

Lifecycle Timeline

2
Patch available
Oct 27, 2026 - 18:18 EUVD
CVE Published
Oct 27, 2026 - 17:35 cve.org
HIGH 7.1

DescriptionCVE.org

Tanium addressed an improper output sanitization vulnerability in Enforce.

Executive ViewAI

Why It Matters

Tanium Enforce, a security automation platform used by our IT and security teams, contains a high-severity output sanitization flaw in versions 2.9, 2.10, and 3.0. A network-reachable attacker could inject malicious content that, when viewed or exported by a legitimate user, may lead to limited data disclosure and integrity impact. Leadership should prioritize patching because this affects the integrity of data relied upon for security enforcement and could undermine trust in our operational tooling.

Business Impact: Medium
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.2%
Top 90% exploitable
Prevalence
Medium
Enterprise endpoint-management module, common in large orgs but not ubiquitous
Social Media
1
Sightings
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 HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
Medium

Priority Score

36
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +36
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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