CVE-2026-104351 in Campaign Classic
Summary
by MITRE • 10/27/2026
Adobe Campaign Classic (ACC) is affected by an Improper Control of Generation of Code ('Code Injection') vulnerability that could result in arbitrary code execution in the context of the current user. A low-privileged attacker could exploit this vulnerability to execute arbitrary code. Exploitation of this issue does not require user interaction. Scope is changed.
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Analysis
by VulDB Data Team • 10/27/2026
Adobe Campaign Classic contains a critical security flaw classified as Improper Control of Generation of Code, commonly referred to as Code Injection under the Common Weakness Enumeration standard CWE-94. This vulnerability arises from insufficient validation and sanitization of input data within the application's processing logic. When user-supplied or externally influenced data is processed without adequate checks for malicious payloads, an attacker can inject arbitrary commands or scripts into the execution environment. The root cause typically involves a failure to properly neutralize special characters that have meaning in the target interpreter, allowing injected code to be executed as if it were legitimate application logic. This represents a fundamental breakdown in input validation controls, which are essential for maintaining the integrity of software operations against external manipulation.
The operational impact of this vulnerability is severe due to its potential for arbitrary code execution within the context of the current user process. Because Adobe Campaign Classic often runs with elevated privileges or specific service account permissions depending on the deployment configuration, successful exploitation can grant an attacker significant control over the underlying operating system and application data. The attack vector does not require any interaction from a legitimate end-user, such as clicking a link or opening a file, which classifies this issue as remote exploitable without user engagement. This characteristic significantly lowers the barrier to entry for attackers, allowing automated tools to scan networks and exploit the flaw at scale. Furthermore, the scope change indicates that the vulnerability allows an attacker to affect resources beyond their own privilege level, potentially leading to lateral movement within a network or escalation of privileges if the current context is not strictly isolated.
From a tactical perspective, this vulnerability aligns with several techniques in the MITRE ATT&CK framework, particularly those related to command and script interpretation such as T1059 Command and Scripting Interpreter. Attackers leveraging this flaw could deploy various payloads ranging from simple shell commands to complex reverse shells or malware downloads, facilitating persistent access and data exfiltration. The lack of required user interaction makes it a high-risk vector for automated botnets targeting unpatched instances of Adobe Campaign Classic across the internet. Organizations relying on this platform face substantial risks including unauthorized modification of marketing campaigns, theft of customer personal information stored within the system, and potential compromise of connected backend systems that trust the campaign server's identity.
To mitigate these risks, immediate patching to the latest version provided by Adobe is the primary remediation strategy. Administrators should verify their current build against Adobe’s security advisories to ensure all relevant hotfixes are applied. In environments where immediate patching is not feasible due to operational constraints, network-level controls such as Web Application Firewalls can be configured to detect and block known code injection patterns in HTTP requests directed at the application endpoints. Additionally, implementing strict input validation rules within custom integrations or scripts that interact with Adobe Campaign Classic can reduce the attack surface by ensuring only expected data formats are processed. Regular security audits and penetration testing focused on injection vulnerabilities should also be conducted to identify any similar weaknesses in related components before they can be exploited by malicious actors seeking to compromise critical business infrastructure.