External risk intelligence

IBM Aspera Faspex Code Execution via Unquoted Shell Interpolation

CVE advisorySeverity: CRITICAL (CVSS 9.1)

CVE-2026-14958

IBM Aspera Faspex is designed as an internet-facing file transfer and collaboration platform. It is commonly deployed as a web application or gateway to facilitate external data exchange, making it a service that is frequently exposed to the public internet in typical production environments.

OS Command Injection

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A vulnerability in IBM Aspera Faspex could allow an authenticated user to execute arbitrary code, impacting systems that handle file transfers and collaboration. This could potentially lead to unauthorized access and manipulation of data.

Code execution flaw found in file transfer software.
Affects systems handling external data exchange.
Confirm relevance and assess exposure.

Attack Path

How an attacker could exploit the issue

An attacker with valid credentials could exploit a vulnerability in IBM Aspera Faspex by sending specially crafted input to a feature that does not properly quote shell commands. This could allow the attacker to execute arbitrary code on the affected system, potentially leading to a complete compromise of the server.

Requires authenticated access.
Triggered by unquoted shell interpolation.
Enables arbitrary code execution.

Live Threat

Current exploitation, exposure, and threat context

A remote authenticated attacker could execute arbitrary code on IBM Aspera Faspex when supported by the advisory. This vulnerability may affect the integrity and availability of the affected system.

System code execution.
Unquoted shell interpolation.
Loss of system integrity.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability affects IBM Aspera Faspex, likely managed by application owners or a dedicated platform team responsible for its lifecycle. The immediate first step is to identify all instances of the affected software, confirm their exposure and business criticality, and then determine the accountable owner for remediation planning.

Identify and assess affected systems.
Confirm exposure and business criticality.
Plan remediation with accountable owners.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is IBM Aspera Faspex?

IBM Aspera Faspex is a high-speed file transfer and collaboration platform. Organizations use it to securely exchange large volumes of data between internal users and external partners. It often acts as a web-based gateway or portal, managing data flow pipelines that serve as a critical bridge for business-to-business information sharing.

What does unquoted shell interpolation mean for CVE-2026-14958?

This vulnerability, classified as CWE-78 (OS Command Injection), happens when the software fails to properly handle user-supplied input before passing it to the system's command shell. Because the input is not enclosed in quotes, the system may interpret parts of that input as additional commands. This allows an attacker to manipulate the intended operation and force the server to execute unauthorized, arbitrary code.

How does an attacker trigger this code execution?

An attacker must possess valid credentials to access the application before they can attempt to exploit this flaw. By submitting specially crafted input through specific software features that perform this unsafe shell interpolation, the attacker can force the system to perform unintended actions. Simply browsing the site or interacting with standard features without providing this malicious input will not trigger the vulnerability.

Is my IBM Aspera Faspex instance at risk?

According to Halo Surface Signal, this software is commonly deployed as an internet-facing application to facilitate external data exchange, which often places it directly on the public internet. If your instance is accessible from the web, it is a high-priority asset. Even if hosted internally, any system that allows users to authenticate could be a target, so you should verify its network reachability immediately.

What should I do if I run IBM Aspera Faspex?

Begin by creating an inventory of all your Faspex deployments to confirm which systems are running the affected versions. Evaluate the business criticality of each instance and identify the team responsible for its maintenance. Once you have a clear picture of your environment, coordinate with those owners to prioritize the system for security updates and check vendor guidance for specific patches.

References

www.ibm.com/support/pages/node/7280530

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.