CVE-2026-48399 in Campaign Classic
Summary
by MITRE • 08/04/2026
Adobe Campaign Classic (ACC) is affected by a Violation of Secure Design Principles vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized read access. Exploitation of this issue does not require user interaction.
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Analysis
by VulDB Data Team • 08/04/2026
Adobe Campaign Classic contains a security vulnerability classified as a violation of secure design principles that allows attackers to bypass critical security controls and obtain unauthorized read access to sensitive data. This flaw represents a fundamental breakdown in the application's security architecture where proper access controls and authentication mechanisms fail to function as intended, creating an exploitable path for malicious actors.
The technical nature of this vulnerability stems from improper implementation of security features within Adobe Campaign Classic's access control system. When attackers exploit this weakness, they can circumvent the normal authorization checks that should prevent unauthorized data retrieval. The vulnerability operates at a design level rather than a runtime error, meaning it exists in how the application's security mechanisms are constructed and implemented. This type of flaw typically manifests when security controls are either missing, incorrectly configured, or fail to properly validate access requests. The absence of user interaction requirements makes this vulnerability particularly dangerous as it can be exploited automatically without any need for social engineering or deceptive practices.
The operational impact of this vulnerability extends beyond simple data theft, potentially exposing sensitive customer information, campaign data, and business-critical communications stored within Adobe Campaign Classic environments. Organizations utilizing this platform may face significant regulatory compliance issues if personal data is accessed without authorization, particularly in industries governed by gdpr, hipaa, or other privacy regulations. The vulnerability could enable attackers to access detailed customer profiles, marketing campaign details, and internal business communications that would normally be restricted to authorized personnel only.
Security professionals should implement immediate mitigations including thorough review of access control configurations within Adobe Campaign Classic installations, deployment of network monitoring to detect anomalous access patterns, and implementation of additional authentication layers beyond the default security mechanisms. Organizations must also conduct comprehensive vulnerability assessments to identify any other potential security design flaws that may exist in similar components or related systems. The remediation process should involve updating to patched versions of Adobe Campaign Classic where available, while simultaneously strengthening overall security posture through principle of least privilege implementation and regular access control reviews.
This vulnerability aligns with CWE-693 (Protection Mechanism Failure) and represents a clear violation of the secure design principle that security controls must be robust and resistant to bypass attempts. From an attack perspective, it maps to ATT&CK technique T1078 (Valid Accounts) and potentially T1566 (Phishing) if attackers first need to establish initial access before leveraging this specific bypass mechanism. The flaw demonstrates the critical importance of defensive design principles where security controls should function effectively regardless of how they are approached by adversaries, ensuring that all potential attack vectors are properly addressed through comprehensive security architecture reviews and regular penetration testing procedures.