CVE-2026-47908: Adobe Dreamweaver Uninitialized Pointer Code Execution Vulnerability

Technical summary

CVE-2026-47908 is an uninitialized pointer access vulnerability (CWE-824) in Adobe Dreamweaver Desktop up to version 21.7. When a malicious file is processed by the application, an uninitialized pointer may be dereferenced, leading to memory corruption that an attacker can leverage to achieve code execution within the user's security context. The vulnerability requires local access and user interaction—specifically, the victim must open the malicious file—but once triggered, it grants full code execution capabilities without privilege escalation requirements.

Business impact

Compromise of Dreamweaver users could enable attackers to steal design projects, intellectual property, credentials stored locally, or use the compromised machine as a pivot point into development environments or web infrastructure pipelines. For organizations relying on Dreamweaver for web development workflows, this creates supply-chain and insider-threat vectors. The need for user interaction limits mass-exploitation scenarios but does not eliminate targeted attacks via spear-phishing or watering-hole campaigns.

Affected systems

Adobe Dreamweaver Desktop version 21.7 and all earlier releases are vulnerable. The issue affects both Windows and macOS platforms. Organizations should inventory Dreamweaver deployments and identify users running 21.7 or older builds. Later versions of Dreamweaver (22.0 and above, pending confirmation against vendor advisories) are not listed as affected.

Exploitability

This vulnerability has not been added to the CISA Known Exploited Vulnerabilities (KEV) catalog, suggesting no public active exploitation has been documented at the time of publication. However, the barrier to exploitation is moderate: an attacker must craft a malicious file and convince or trick a user into opening it. The defect is a memory corruption bug that typically requires some reverse-engineering effort to weaponize reliably, but for a well-resourced threat actor, development is feasible. The local attack surface and user-interaction requirement reduce but do not eliminate real-world risk.

Remediation

Users and administrators must upgrade Dreamweaver Desktop to a version newer than 21.7. Verify the exact patched version by consulting Adobe's official security advisory. Until patching is complete, users should avoid opening Dreamweaver files from untrusted sources and consider restricting file access permissions for Dreamweaver application accounts where feasible.

Patch guidance

Contact Adobe directly or visit Adobe's security update page to obtain and deploy the latest Dreamweaver Desktop release addressing CVE-2026-47908. Prioritize patching for users who regularly open files from external or less-trusted sources. Test the patched version in a non-production environment first to ensure compatibility with existing projects and plugins. If a formal patch release is unavailable, consult Adobe's advisory for interim mitigations or workarounds.

Detection guidance

Monitor for suspicious file opens in Dreamweaver or unexpected process spawning from the Dreamweaver executable. Endpoint detection and response (EDR) tools should alert on unusual child processes launched by Dreamweaver or atypical file system and registry modification patterns following Dreamweaver file operations. Review logs for failed or successful file opens of suspicious or unknown .dw* or related design files. Consider blocking execution of Dreamweaver files from email attachments or untrusted directories via application control policies.

Why prioritize this

This vulnerability merits near-term remediation because it enables arbitrary code execution in a widely-used professional tool. Although exploitation requires user interaction, the target audience (web developers) often works with files from diverse sources. The HIGH severity rating reflects the full impact scope (confidentiality, integrity, and availability compromise), and the low complexity barrier once a malicious file is crafted. Organizations should prioritize patching for users whose roles involve opening external files or collaborating with third parties.

Risk score, explained

The CVSS 3.1 score of 7.8 (HIGH) reflects a local attack vector, low attack complexity, no privilege requirement, required user interaction, and unrestricted impact across confidentiality, integrity, and availability. The score accurately captures the threat: while user interaction is mandatory, the resulting code execution is complete and operates within the user's existing privilege level. Environments with strict file-access controls and user awareness training may see lower realized risk.

Frequently asked questions