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CVE-2026-75728 – Unauthenticated Remote Code Execution – Adobe Campaign Classic ≤ 7.4.4 build 9401

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Summary

CVE-2026-75728 is a critical Incorrect Authorization vulnerability (CWE-863) in Adobe Campaign Classic (ACC) that allows an attacker to achieve arbitrary code execution in the context of the current user. The flaw is remotely exploitable over the network, requires no privileges, and needs no user interaction, making it a high-priority target for internet-exposed ACC instances. Adobe rates the issue CRITICAL with a CVSS v3.1 base score of 9.1.

Technical details

  • Root cause: ACC fails to correctly enforce authorization checks on a function or resource, allowing an attacker to bypass intended access controls (CWE-863: Incorrect Authorization).
  • Trigger conditions: No authentication or user interaction is required to trigger the flaw; the affected component is reachable over the network.
  • Attack vector: Network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N).
  • Impact: Successful exploitation results in arbitrary code execution in the context of the current user, with high impact to confidentiality and integrity; availability is not affected (C:H/I:H/A:N).

Affected software

  • Adobe Campaign Classic (ACC), all versions from 0 through 7.4.4 build 9401.
  • Version 7.4.4 build 9402 and later are not affected (fixed).

Severity

  • CVSS v3.1 Base Score: 9.1 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Mitigation and recommended actions

  • Immediate: Upgrade Adobe Campaign Classic to version 7.4.4 build 9402 or later, as published in Adobe’s security bulletin (APSB26-142).
  • If patching is not immediately possible: Restrict network access to ACC management/administration interfaces to trusted networks only (e.g., via firewall rules or VPN), and monitor internet-facing ACC deployments closely for unusual activity until the patch can be applied. No official workaround beyond upgrading has been published by Adobe.

References

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