How severe is CVE-2026-21271?

CVE-2026-21271 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-21271 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-21271?

CVE-2026-21271 affects Adobe Dreamweaver. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-21271?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-21271 have an EU (EUVD) identifier?

Yes. CVE-2026-21271 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2056.

When was CVE-2026-21271 published?

CVE-2026-21271 was published on 2026-01-13 and last updated on 2026-06-17.

CVE-2026-21271

CVE-2026-21271 is a high-severity vulnerability in Adobe Dreamweaver with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2056
Weakness: CWE-20
Affected product: Adobe Dreamweaver
Published: 2026-01-13
Last modified: 2026-06-17

Description

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 in that a victim must open a malicious file and scope is changed.

Frequently asked questions

What is 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 in that a victim must open a malicious file and scope is changed.
How severe is CVE-2026-21271?: CVE-2026-21271 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-21271 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-21271?: CVE-2026-21271 affects Adobe Dreamweaver. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-21271?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-21271 have an EU (EUVD) identifier?: Yes. CVE-2026-21271 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2056.
When was CVE-2026-21271 published?: CVE-2026-21271 was published on 2026-01-13 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/dreamweaver/apsb26-01.html

Affected products (1)

cpe:2.3:a:adobe:dreamweaver:*:*:*:*:*:*:*:*

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