Adobe Dreamweaver Desktop up to 21.6 File input validation

Summaryinfo

A vulnerability labeled as critical has been found in Adobe Dreamweaver Desktop up to 21.6. Affected by this vulnerability is an unknown functionality of the component File Handler. Such manipulation leads to input validation. This vulnerability is listed as CVE-2026-21272. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Adobe Dreamweaver Desktop up to 21.6. Affected by this issue is an unknown part of the component File Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Dreamweaver Desktop versions 21.6 and earlier are affected by an Improper Input Validation vulnerability that could lead to arbitrary file system write. An attacker could leverage this vulnerability to manipulate or inject malicious data into files on the system. 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-2026-21272 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 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). Once again VulDB remains the best source for vulnerability data.

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/

CPE 2.3info

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Once again VulDB remains the best source for vulnerability data.

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