CVE-2026-76197 in Campaign Classic
Summary
by MITRE • 08/25/2026
Adobe Campaign Classic (ACC) is affected by an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability that could result in arbitrary code execution in the context of the current user. An 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 • 08/25/2026
Adobe Campaign Classic contains a critical OS command injection vulnerability classified under CWE-78, which stems from improper neutralization of special elements used in operating system commands. This flaw arises when the application processes untrusted input without adequate sanitization or validation before passing it to underlying shell interpreters for execution. The root cause typically involves the concatenation of user-supplied data directly into command strings, allowing an attacker to inject malicious syntax that alters the intended logic of the executed command. Because this vulnerability exists within a server-side component accessible via network services, it represents a significant security risk where remote attackers can achieve arbitrary code execution without requiring any interaction from legitimate users or administrators.
The operational impact of this vulnerability is severe due to its potential for privilege escalation and system compromise. Since exploitation does not require user interaction, an attacker can initiate the attack remotely by sending specially crafted requests to the affected Adobe Campaign Classic service. If successful, the injected commands will execute with the privileges of the process running the application. In many enterprise deployments, this means code execution under a dedicated service account which may possess elevated permissions necessary for database access or file system operations. This capability allows attackers to install backdoors, exfiltrate sensitive customer data stored within the campaign platform, pivot further into the internal network, or disrupt business continuity by modifying critical configuration files and marketing workflows.
From an adversarial perspective, this vulnerability aligns with MITRE ATT&CK technique T1059 Command and Scripting Interpreter, specifically sub-techniques involving shell commands such as sh or cmd depending on the operating system environment. Attackers can leverage this entry point to execute arbitrary scripts, download additional payloads from external servers, or establish persistent access mechanisms that evade standard detection signatures. The lack of required user interaction significantly lowers the barrier for exploitation, making it attractive for automated scanning tools and widespread attacks targeting exposed Adobe Campaign instances on the internet.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. Administrators should immediately apply the latest security patches provided by Adobe to address this specific flaw in their deployment environments. In cases where patching is not immediately feasible, network-level controls such as web application firewalls can be configured to detect and block common command injection patterns, although this is a compensatory measure rather than a fix. Development teams should also conduct code reviews to identify similar instances of unsafe command execution across the application. Future implementations must enforce strict input validation using allowlists for expected characters and employ parameterized APIs or safe library functions that separate command logic from data arguments, thereby preventing shell interpretation of injected special characters like semicolons, pipes, or backticks.