CVE-2025-67840

HighPublic PoCRCE

Published: 03 March 2026

Published

03 March 2026

Modified

05 March 2026

KEV Added

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Patch

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CVSS Score 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0005 16.6th percentile

Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-67840 is a high-severity OS Command Injection (CWE-78) vulnerability in Cohesity Tranzman. Its CVSS base score is 7.2 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 16.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 2 other techniques.

Threat & Defense Details

Likely Mitigating ControlsAI

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.

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 →

T1059.004 Unix Shell Execution

Adversaries may abuse Unix shell commands and scripts for execution.

attack.mitre.org →

T1068 Exploitation for Privilege Escalation Privilege Escalation

Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.

attack.mitre.org →

Why these techniques?

Authenticated command injection in public web app directly enables T1190 exploitation for RCE; results in arbitrary Unix shell command execution (T1059.004) with root privileges (T1068).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

Multiple authenticated OS command injection vulnerabilities exist in the Cohesity (formerly Stone Ram) TranZman 4.0 Build 14614 through TZM_1757588060_SEP2025_FULL.depot web application API endpoints (including Scheduler and Actions pages). The appliance directly concatenates user-controlled parameters into system commands without sufficient sanitisation,…

allowing an authenticated admin user to inject and execute arbitrary OS commands with root privileges. An attacker can intercept legitimate requests (e.g. during job creation or execution) using a proxy and modify parameters to include shell metacharacters, achieving remote code execution on the appliance. This completely bypasses the intended CLISH restricted shell confinement and results in full system compromise. The vulnerabilities persist in Release 4.0 Build 14614 including the latest patch (as of the time of testing) TZM_1757588060_SEP2025_FULL.depot.

Deeper analysisAI

CVE-2025-67840 describes multiple authenticated OS command injection vulnerabilities (CWE-78) in the Cohesity (formerly Stone Ram) TranZman 4.0 web application, affecting API endpoints including the Scheduler and Actions pages from Build 14614 through the patch TZM_1757588060_SEP2025_FULL.depot. The appliance directly concatenates user-controlled parameters into system commands without sufficient sanitization. Published on 2026-03-03, it carries a CVSS v3.1 base score of 7.2 (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

An authenticated administrator can exploit these vulnerabilities by intercepting legitimate requests, such as those during job creation or execution, using a proxy to modify parameters and inject shell metacharacters. This enables execution of arbitrary OS commands with root privileges, resulting in remote code execution on the appliance. The flaws completely bypass the CLISH restricted shell confinement, leading to full system compromise.

Advisory details and proof-of-concept exploits are documented by researcher Greg Durys in a GitHub repository at https://github.com/GregDurys/Cohesity-TranZman-CVEs and a related gist at https://gist.github.com/GregDurys/ef7fc6a36646df927374bba8e7279270. The Cohesity website at https://cohesity.com serves as an additional reference, though the vulnerabilities persist in Release 4.0 Build 14614 including the latest tested patch TZM_1757588060_SEP2025_FULL.depot.