Is CVE-2026-34621 actively exploited?

CVE-2026-34621 has no public evidence of in-the-wild exploitation as of 2026-04-13.

What is the CVSS score for CVE-2026-34621?

CVE-2026-34621 has a CVSS score of 8.6 (HIGH severity). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

How do I patch CVE-2026-34621?

Patch guidance is available from adobe security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-34621.

Fix CVE-2026-34621 - HIGH adobe acrobat dc

Q: Which products are affected by CVE-2026-34621?

4 products: adobe acrobat dc, adobe acrobat reader dc, adobe acrobat, adobe acrobat.

Description

Acrobat Reader versions 24.001.30356, 26.001.21367 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') 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.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack Vector: local
Complexity: low
Privileges: none
User Action: required
Scope: changed
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-1321

Metadata

Primary Vendor: ADOBE
Published: 4/11/2026
Last Modified: 4/13/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-34621

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary