Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Unauthenticated network path traversal with no user interaction yields arbitrary code execution; scope changes as code runs beyond the app's security boundary, with full C/I/A loss.
Primary rating from Vendor (adobe).
CVSS VectorVendor: adobe
Lifecycle Timeline
3DescriptionCVE.org
ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability that could lead to arbitrary code execution in the context of the current user. Exploitation of this issue does not require user interaction. Scope is changed.
Articles & Coverage 1
AnalysisAI
Path traversal in Adobe ColdFusion 2025.9, 2023.20 and earlier enables remote, unauthenticated attackers to write or access files outside intended directories and achieve arbitrary code execution in the context of the current user. Rated CVSS 10.0 with a changed scope and no user interaction required, this is among the most severe ColdFusion flaws possible. No public exploit identified at time of analysis, but the impact and trivial attack complexity make it a top patching priority.
Technical ContextAI
ColdFusion is Adobe's commercial application server and rapid web-application development platform built on Java, commonly deployed as an internet-facing web application engine. The root cause is CWE-22 (Improper Limitation of a Pathname to a Restricted Directory, i.e. Path Traversal): attacker-controlled path input is not properly sanitized, allowing sequences such as '../' to escape an intended restricted directory. In ColdFusion this class of flaw historically permits writing or reading files at arbitrary filesystem locations, which can be chained into code execution when an attacker plants or invokes a payload (e.g. a CFM/JSP file or overwrites a script the server executes). The CPE cpe:2.3:a:adobe:coldfusion:*:*:*:*:*:*:*:* confirms the affected product is the Adobe ColdFusion application (all matching versions up to the fixed builds).
RemediationAI
Apply Adobe's security update as published in advisory APSB26-68 (https://helpx.adobe.com/security/products/coldfusion/apsb26-68.html); upgrade beyond ColdFusion 2025.9 and 2023.20 to the patched builds listed by Adobe. Patch available per vendor advisory - install the latest cumulative update for your release train and verify the post-install build number. Until patched, restrict network exposure by placing ColdFusion behind a WAF or reverse proxy and blocking external access to the ColdFusion administrative and internal endpoints, apply Adobe's published Lockdown Guide to constrain filesystem permissions of the service account (limiting what arbitrary file writes can achieve), and remove unused or internet-facing CFM endpoints; note these controls reduce but do not eliminate exposure and may break legitimate integrations, so they are stopgaps pending the patch.
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Same weakness CWE-22 – Path Traversal
View allSame technique Path Traversal
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-40339
GHSA-jfrp-7pp5-772c