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CVE-2026-75703 – Remote Code Execution – Adobe Campaign Classic ≤ 7.4.4 build 9401

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Summary

CVE-2026-75703 is a critical Improper Control of Generation of Code (‘Code Injection’, CWE-94) vulnerability in Adobe Campaign Classic (ACC) that allows an unauthenticated, remote attacker to execute arbitrary code in the context of the current user. The flaw carries the maximum CVSS v3.1 base score of 10.0, requires no authentication or user interaction, and affects on-premise ACC deployments and the on-premise components of hybrid deployments.

Technical details

  • Root cause: ACC fails to properly control the generation of code from attacker-supplied input, allowing injected code to be generated and executed on the server (CWE-94, Improper Control of Generation of Code).
  • Trigger conditions: No authentication and no user interaction are required to exploit the flaw.
  • Attack vector: Network — the vulnerability is remotely exploitable over the network (AV:N), with low attack complexity (AC:L) and no privileges required (PR:N).
  • Impact: Successful exploitation results in arbitrary code execution in the context of the current user; the CVSS vector indicates a changed scope (S:C) with high impact to confidentiality, integrity, and availability, meaning the attacker can affect resources beyond the vulnerable component itself.
  • Adobe’s advisory does not indicate any known exploitation of this vulnerability in the wild as of publication.

Affected software

  • Adobe Campaign Classic v7 — all versions from build 0 through 7.4.4 build 9401 (Windows and Linux, on-premise deployments and the on-premise components of hybrid deployments).
  • Adobe-hosted (fully managed) Campaign Classic instances are not affected by this advisory.

Severity

  • CVSS v3.1 Base Score: 10.0 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Upgrade Adobe Campaign Classic to build 7.4.4 build 9402 or later, which resolves this vulnerability.
  • Organizations on Adobe-hosted Campaign Classic instances do not need to take action, as Adobe has already remediated its hosted environment.
  • If immediate patching is not possible, restrict network access to the Campaign Classic management/application interfaces to trusted, internal networks only until the update can be applied, and monitor Campaign Classic servers for unexpected process execution or anomalous inbound traffic.

References

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