CVE-2026-21268
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedDreamweaver Desktop versions 21.6 and earlier are affected by an Improper Input Validation vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file and scope is changed.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceAdobe Dreamweaver Desktop versions 21.6 and earlier contain an improper input validation vulnerability that allows arbitrary code execution in the context of the current user. Exploitation requires a victim to open a malicious file, and the vulnerability explicitly changes the security scope.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 21.7CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify Dreamweaver installationCheck for Dreamweaver installation using system inventory tools (e.g., 'wmic product where "name like \"%Dreamweaver%\" get name,version' on Windows, or package managers on macOS)Affected if Adobe Dreamweaver Desktop is installed on the system
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Determine installed Dreamweaver versionLocate the installed version through the application itself (Dreamweaver > About Dreamweaver on macOS, or Help > About Dreamweaver on Windows) or through system inventoryAffected if The reported version number is 21.6 or earlier (anything below 21.7)
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Identify file association behaviorReview which file types are configured to open in Dreamweaver by checking default application settings or file associations in the operating systemAffected if Dreamweaver is set to automatically open common file types (such as .html, .htm, .php, .js) that could originate from untrusted sources
A user is affected if Dreamweaver Desktop version 21.6 or earlier is installed and the user opens malicious files in the application.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped21.7
Update Dreamweaver to a version newer than 21.6 when patches are released by Adobe. Until then, avoid opening untrusted or unsolicited files in Dreamweaver.
Dreamweaver Desktop 21.7
- Upgrade Dreamweaver Desktop to version 21.7 or later
- Verify the installation by checking Help > About Dreamweaver to confirm the version number
- Ensure users are instructed not to open untrusted files, as exploitation requires opening a malicious file
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,880.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-21268 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-21268 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data