Adobe Dreamweaver Desktop up to 21.6 File os command injection

Summaryinfo

A vulnerability described as critical has been identified in Adobe Dreamweaver Desktop up to 21.6. Affected is an unknown function of the component File Handler. Such manipulation leads to os command injection. This vulnerability is documented as CVE-2026-21267. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Adobe Dreamweaver Desktop up to 21.6. It has been rated as critical. Affected by this issue is an unknown code block of the component File Handler. The manipulation with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Dreamweaver Desktop versions 21.6 and earlier are affected by an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability that could lead in arbitrary code execution by an attacker. Exploitation of this issue requires user interaction in that a victim must open a malicious file and scope is changed.

The advisory is shared for download at helpx.adobe.com. This vulnerability is handled as CVE-2026-21267 since 12/12/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/14/2026). The MITRE ATT&CK project declares the attack technique as T1202.

The vulnerability scanner Nessus provides a plugin with the ID 283674 (Adobe Dreamweaver 21.0 < 21.7 Multiple Vulnerabilities (APSB26-01) (macOS)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (283674). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Adobe

Name

• Dreamweaver Desktop

Version

• 21.0
• 21.1
• 21.2
• 21.3
• 21.4
• 21.5
• 21.6

License

• commercial

Website

• Vendor: https://www.adobe.com/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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