External risk intelligence

Island Lake WebBatch Remote Code Execution Via Crafted URL

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2025-53867

The vulnerability affects a web-based application (WebBatch) and allows remote code execution via a crafted URL. Applications categorized as web-based or web-batch processing services are frequently deployed as internet-facing or accessible endpoints, making exposure to the public internet a common deployment pattern for this type of technology.

Code 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

This advisory addresses a critical vulnerability in the Island Lake WebBatch software that could allow attackers to execute malicious code remotely through a specially crafted web link. The issue's high severity and the nature of web-based applications suggest a potential for broad impact if not addressed. The primary concern is to confirm if this specific technology is in use and to understand any potential exposure.

Remote code execution via web link.
Critical flaw in web-batch processing software.
Confirm relevance and assess potential exposure.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending a specially crafted URL to a user of the Island Lake WebBatch application. If the user clicks this URL, it could lead to the attacker executing arbitrary code on the affected system. This is possible because the application does not properly validate the URL.

Requires a user to click a malicious URL.
Vulnerable component is the application's URL handling.
Risk is remote code execution.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated attacker to execute arbitrary code on a server by sending a specially crafted URL. This could potentially impact the integrity and availability of the affected system.

Server-side code execution is at risk.
Exposure may happen via a malicious URL.
System compromise is a realistic consequence.

Operational Fix

Recommended remediation, mitigation, and detection steps

Security and infrastructure teams are likely responsible for addressing this remote code execution vulnerability in Island Lake WebBatch. The first practical step is to identify all instances of the affected technology, determine their accessibility and criticality, and confirm ownership before planning remediation.

Determine affected asset ownership.
Verify internet exposure and business impact.
Plan remediation based on identified risk.

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 Island Lake WebBatch?

Island Lake WebBatch is a software solution designed for web-based batch processing tasks. It helps organizations automate and manage server-side operations by executing scripts or processing data streams triggered by web requests. It is commonly used in environments where server automation and automated workflows are essential to daily operations.

What does CWE-94 mean for CVE-2025-53867?

This vulnerability is classified as CWE-94, which refers to the improper control of code generation. In plain terms, the software accidentally allows external inputs—specifically a specially crafted URL—to be interpreted as executable commands. Because the application fails to safely validate these inputs, it enables an attacker to run their own unauthorized instructions on the server hosting the software.

How is this vulnerability triggered?

An attacker triggers the vulnerability by sending a malicious URL to the WebBatch application. The bug specifically resides in the software's URL handling logic. It is important to note that the vulnerability is not triggered by simply visiting a standard, legitimate website or running expected batch jobs; it requires the specific, malformed URL structure designed to bypass the application's input protections.

Is my system at risk according to Halo Surface Signal?

Halo Surface Signal indicates that because WebBatch is a web-based service, it is often deployed as an internet-facing endpoint. This accessibility increases the likelihood that the system could be reached by external attackers. You should evaluate whether your instance of WebBatch is reachable from the public internet, as such deployments are frequently identified as high-priority areas for this specific type of remote code execution risk.

What should I do first to address this?

Your first step is to conduct an inventory to locate every instance of Island Lake WebBatch running in your environment. Once identified, determine which systems are internet-facing versus those restricted to internal networks. After mapping these assets and confirming ownership, check for available updates, as the vulnerability affects versions prior to 2025C.

References

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.