Cyber Resilience

CVE-2026-9207

HighRCE

Published: 27 May 2026

Published
27 May 2026
Modified
28 May 2026
KEV Added
—
Patch
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CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0039 31.1th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-9207 is a high-severity OS Command Injection (CWE-78) vulnerability in Tanium Connect. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 31.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

Tanium addressed an unauthorized code execution vulnerability in Connect.

CWE(s)
CWE-78

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.003 Windows Command Shell Execution
Adversaries may abuse the Windows command shell for execution.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
Why these techniques?

CWE-78 OS command injection enables remote exploitation of a public-facing Tanium component (T1190) resulting in arbitrary OS command execution via shell interpreters (T1059.003/.004).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-9208Same product: Tanium Connect
CVE-2026-2435Same vendor: Tanium
CVE-2025-15344Same vendor: Tanium
CVE-2018-25115Shared CWE-78
CVE-2025-24382Shared CWE-78
CVE-2026-29058Shared CWE-78
CVE-2024-57016Shared CWE-78
CVE-2024-46484Shared CWE-78
CVE-2015-10145Shared CWE-78
CVE-2020-37002Shared CWE-78

Affected Assets

tanium
connect
5.26.0 — 5.26.191 · 5.29.0 — 5.29.237 · 5.37.0 — 5.37.140

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

References