CVE-2026-105780 in Campaign Classic
Summary
by MITRE • 10/27/2026
Adobe Campaign Classic (ACC) is affected by an Incorrect Authorization 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 an incorrect authorization vulnerability, which fundamentally undermines the application's access control mechanisms. This defect allows attackers who possess low-privileged credentials to bypass intended restrictions and escalate their privileges within the system. The core of the issue lies in the failure of the server-side logic to properly validate whether the authenticated user has sufficient rights to perform specific administrative or sensitive operations. By manipulating API requests or internal function calls, an attacker can trick the application into executing actions that should be restricted to higher-level administrators. This misconfiguration effectively neutralizes the security boundary between standard users and privileged accounts, creating a pathway for unauthorized access control bypasses that are difficult to detect through conventional monitoring tools without specific attention to privilege escalation patterns.
The operational impact of this vulnerability is severe due to its potential to lead directly to arbitrary code execution within the context of the current user process. Because Adobe Campaign Classic often runs with elevated system privileges or has broad file system access, successful exploitation allows an attacker to inject and execute malicious scripts or binaries on the underlying operating system. This capability transforms a simple authentication bypass into a full remote code execution scenario, granting the adversary complete control over the affected server instance. The attack does not require any user interaction, meaning it can be automated and launched remotely against vulnerable instances without needing social engineering tactics such as phishing links to trick employees into clicking malicious content. This characteristic significantly lowers the barrier for entry for threat actors, enabling widespread exploitation across unpatched environments in enterprise settings where Adobe Campaign is deployed for marketing automation workflows.
From a technical classification perspective, this vulnerability aligns with CWE-269, which denotes Improper Privilege Management, and specifically relates to CWE-862, the Missing Authorization check. In terms of offensive security frameworks like MITRE ATT&CK, this behavior maps directly to T1078 Valid Accounts, where attackers leverage legitimate credentials that have been compromised or misconfigured to gain access. Furthermore, the ability to execute arbitrary code post-exploitation corresponds to T1059 Command and Scripting Interpreter if scripts are used, or potentially T1203 Exploitation for Client Execution depending on the specific delivery mechanism employed by the attacker within the application environment. The change in scope indicates that while previous assessments might have limited the impact to data access, this flaw allows for deeper system compromise, thereby increasing the severity rating and requiring immediate remediation attention from security operations teams responsible for protecting marketing technology stacks.
Mitigation strategies must focus on both immediate containment and long-term architectural improvements. Organizations should immediately apply vendor-provided patches or updates that address the authorization logic flaws in Adobe Campaign Classic to restore proper access controls. In environments where patching is not instantly feasible, network segmentation can help isolate vulnerable instances from untrusted networks, reducing the attack surface available to remote attackers. Additionally, implementing strict input validation and enforcing principle of least privilege across all user accounts ensures that even if an attacker gains initial foothold through low-privileged credentials, their ability to escalate privileges remains restricted. Security teams should also enhance logging and monitoring capabilities to detect anomalous behavior indicative of authorization bypass attempts, such as unusual API calls from standard users or unexpected process spawns following login events. Regular audits of user permissions and role assignments are essential to prevent the accumulation of excessive privileges that could be exploited by malicious actors seeking to compromise critical business infrastructure.