CVE-2026-21271
RCE in Dreamweaver Desktop <=21.6 via crafted file (input validation flaw).
Is CVE-2026-21271 being exploited?
Not confirmed. CVE-2026-21271 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.25% probability of exploitation in the next 30 days.
How severe is CVE-2026-21271?
CVE-2026-21271 is rated High with a CVSS score of 8.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-21271?
Yes. A fix has been recorded for CVE-2026-21271. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-21271 affect?
CVE-2026-21271 affects Adobe Dreamweaver Desktop <=21.6. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-21271?
Update to latest Dreamweaver when available
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
RCE in current user context via opening a malicious Dreamweaver file; user interaction required.
Patch when possible
- affected<= 21.6
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.