What is CVE-2026-21271?

CVE-2026-21271 is a high-severity vulnerability in Adobe Dreamweaver, classified under Improper Input Validation. CVSS score: 8.6/10. Published 2026-01-13.

How severe is CVE-2026-21271?

High severity. CVSS v3 base score is 8.6 out of 10.

Improper input validation in Adobe Dreamweaver

CVE-2026-21271

Dreamweaver 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…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.002 (11.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Adobe Dreamweaver
Adobe Dreamweaver Desktop — versions 0
Apple Macos
Microsoft Windows

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

psirt@adobe.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-21271?: CVE-2026-21271 is a high-severity vulnerability in Adobe Dreamweaver, classified under Improper Input Validation. CVSS score: 8.6/10. Published 2026-01-13.
How severe is CVE-2026-21271?: High severity. CVSS v3 base score is 8.6 out of 10.