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CVE-2026-34621Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)

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.

8.6 HIGHEPSS 7.34%⚡ Known Exploited (CISA KEV)NVD: Analyzed

OverviewAffected ProductsReferences
NVD CVE.org

Overview

Severity

ScoreSeverityVersionVector String
8.6HIGH3.1adobe (CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CISA required action

⚡ Known exploited · remediation due Apr 27, 2026

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Details

CVE ID
CVE-2026-34621
Status
Analyzed
Assigner (CNA)
adobe
Published
Apr 11, 2026
Last modified
2026-10-26 21:10 UTC
Weaknesses
  • CWE-1321 · Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-09 10:18 UTC.