Critical Adobe Campaign Classic Vulnerabilities Enables Arbitrary Code Execution

Adobe has issued a critical security update for Adobe Campaign Classic, addressing multiple flaws that could enable arbitrary code execution on vulnerable systems. The update, tracked as APSB26-120 and published on August 3, 2026, carries Adobe’s highest priority rating of 1. The security issues affect Adobe Campaign Classic ACC v7.4.3 build 9398 and earlier on Windows and Linux. Organizations should upgrade to ACC v7.4.3 build 9399 as soon as possible. Organizations use Adobe Campaign Classic to manage cross-channel marketing campaigns, customer profiles, email workflows, and campaign automation. A successful compromise could give attackers access to sensitive marketing data, internal infrastructure, customer information, and...

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