Cyber Resilience

CVE-2025-67397

CriticalRCE

Published: 05 January 2026

Published
05 January 2026
Modified
22 January 2026
KEV Added
—
Patch
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CVSS Score v3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0069 48.1th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2025-67397 is a critical-severity Command Injection (CWE-77) vulnerability in Passy Passy. Its CVSS base score is 9.1 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 48.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2025-67397 is a command injection vulnerability (CWE-77) in Passy version 1.6.3. The flaw enables a remote authenticated attacker to execute arbitrary commands by sending a crafted HTTP request that incorporates a specific payload injection.

A remote attacker with high privileges can exploit this vulnerability over the network with low attack complexity and no user interaction required. Successful exploitation grants high impacts on confidentiality, integrity, and availability, along with a change in scope, resulting in a CVSS v3.1 base score of 9.1.

Research details for CVE-2025-67397, including a proof-of-concept, are published in the GitHub repository at https://github.com/giulioschiavone/Vulnerability-Research/tree/main/CVE-2025-67397. The official Passy website at https://www.passy.it/ provides further information on the software, where users should check for advisories or patches.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

An issue in Passy v.1.6.3 allows a remote authenticated attacker to execute arbitrary commands via a crafted HTTP request using a specific payload injection.

CWE(s)
CWE-77

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 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
Why these techniques?

Command injection via crafted HTTP request in remote service directly enables public-facing application exploitation (T1190) and arbitrary command/script execution (T1059).

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

CVEs Like This One

CVE-2026-44869Shared CWE-77
CVE-2026-44866Shared CWE-77
CVE-2025-57685Shared CWE-77
CVE-2025-60021Shared CWE-77
CVE-2026-2333Shared CWE-77
CVE-2025-67728Shared CWE-77
CVE-2025-24818Shared CWE-77
CVE-2024-54794Shared CWE-77
CVE-2025-60801Shared CWE-77
CVE-2025-55294Shared CWE-77

Affected Assets

passy
passy
1.6.3

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

SI-2 requires timely identification, reporting, and correction of flaws like this command injection vulnerability through patching Passy to version 1.6.3 or later.

SI-10 Information Input Validation good match
prevent

SI-10 mandates validation of information inputs such as crafted HTTP requests to block arbitrary command injection payloads.

SI-4 System Monitoring partial match
detect

SI-4 enables monitoring of system processes and activities to identify unauthorized command executions from exploitation attempts.

References