EUVD-2026-56840
GHSA-jrx4-5gm3-vcqr
Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Unauthenticated network-reachable authorization bypass yielding code execution (AV:N/AC:L/PR:N/UI:N) with full CIA loss and a changed scope (S:C) per Adobe's described impact.
Primary rating from Vendor (adobe).
CVSS VectorVendor: adobe
Lifecycle Timeline
2DescriptionCVE.org
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. An attacker could exploit this vulnerability to execute arbitrary code. Exploitation of this issue does not require user interaction. Scope is changed.
Articles & Coverage 1
AnalysisAI
Arbitrary code execution in Adobe Campaign Classic (ACC v7 through 7.4.3 build 9399) stems from an incorrect authorization flaw that lets a remote attacker bypass authentication and run code in the context of the current user. Adobe's PSIRT rates it CVSS 10.0 with a changed scope, meaning a successful attack can impact resources beyond the initially vulnerable component. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions - remote unauthenticated exploitation against Adobe Campaign Classic v7 (ACC v7) instances running 7.4.3 build 9399 or earlier, per CVSS AV:N/AC:L/PR:N/UI:N with no required user interaction. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine top-priority issue rather than a high-score-but-low-real-risk case: the CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H) describes network-reachable, low-complexity, unauthenticated exploitation with no user interaction and total confidentiality, integrity, and availability loss across a changed scope - the maximum 10.0. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade Adobe Campaign Classic v7 to 7.4.4 build 9400, which remediates the incorrect authorization flaw, per Adobe bulletin APSB26-123 (https://helpx.adobe.com/security/products/campaign/apsb26-123.html). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, disable or severely restrict network access to all Adobe Campaign Classic v7 instances to trusted networks only; simultaneously audit all access logs for suspicious or unauthorized activity. …
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Same weakness CWE-863 – Incorrect Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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