External risk intelligence

Adobe Experience Manager Code Injection Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.9)

CVE-2026-113579

Adobe Experience Manager is an enterprise content management system commonly deployed as a public-facing web application, portal, or API endpoint to manage digital assets and web content. As a server-side web platform, it is frequently exposed to the internet to facilitate content delivery and external access, making this vulnerability accessible in typical deployment scenarios.

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

A critical vulnerability in Adobe Experience Manager allows unauthorized code execution with significant impact. This flaw, classified as improper control of code generation, means a low-privileged attacker could potentially take control of systems without needing user interaction. Given the system's role in managing content and digital assets, confirming relevance and exposure is the primary concern for leadership.

Attacker can run unauthorized code.
Enterprise content system at risk.
Confirm relevance and exposure.

Attack Path

How an attacker could exploit the issue

An attacker with low privileges could exploit a code injection flaw in Adobe Experience Manager to run malicious code on the server. This could happen without any user interaction, potentially leading to a significant compromise of the system.

Entry requires low-privileged access.
Trigger is code injection.
Risk is arbitrary code execution.

Live Threat

Current exploitation, exposure, and threat context

A critical vulnerability in Adobe Experience Manager could allow a low-privileged attacker to execute arbitrary code on the affected system without user interaction. This could impact the integrity and availability of the system and potentially lead to the execution of malicious commands or unauthorized access to system resources.

System data and service behavior could be affected.
Code execution may occur via a network path.
Unauthorized code execution is a realistic consequence.

Operational Fix

Recommended remediation, mitigation, and detection steps

This critical vulnerability in Adobe Experience Manager (AEM) requires immediate attention from teams responsible for application security and core platform infrastructure. The first practical step is to inventory all AEM instances, determine their internet exposure and business criticality, and identify the accountable application owner. Following this, a risk-based remediation plan should be developed, considering the potential for arbitrary code execution.

Application owners should lead remediation efforts.
Verify AEM instance exposure and business criticality.
Plan and coordinate AEM instance updates.

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 Adobe Experience Manager?

Adobe Experience Manager is an enterprise-grade content management system. Organizations use it to build and maintain websites, manage digital assets, and power complex web applications or portal interfaces that serve content to users.

What does the code injection flaw in CVE-2026-113579 mean?

This vulnerability is classified as Improper Control of Generation of Code (CWE-94). It means an attacker can inject malicious instructions into the system, tricking it into executing unauthorized commands. Because the system improperly handles this input, it runs the injected code as if it were legitimate software, leading to full system compromise.

How does an attacker trigger this vulnerability?

An attacker needs low-privileged access to the system to initiate the attack. Once this access is established, they can send crafted requests over the network to trigger the injection. Importantly, the attack does not require any interaction from a legitimate user; the system processes the malicious code automatically upon receipt.

Is my Adobe Experience Manager instance at risk?

According to Halo Surface Signal, this software is often deployed as a public-facing web application or API endpoint to facilitate content delivery, which frequently places it on the internet. Instances exposed to the internet are at higher risk because they are reachable by remote attackers, whereas internal-only instances have a smaller attack surface.

Do I need to take action if I run this software?

Yes. Start by creating a complete inventory of your Adobe Experience Manager instances to track where they are deployed. Determine which systems are accessible from the internet and identify the specific teams responsible for each instance. This preparation is essential for coordinating a timely response and applying the necessary updates.

References

www.adobe.com/trust/security/products/experience-manager/apsb26-189…

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.