CVE-2026-34621

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 v3 8.6 HIGH

8.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://helpx.adobe.com/security/products/acrobat/apsb26-43.html	Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34621	US Government Resource

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:a:adobe:acrobat_dc:::::continuous:::*
	cpe:2.3:a:adobe:acrobat_reader_dc:::::continuous:::*

OR	cpe:2.3:o:apple:macos:-:::::::*
	cpe:2.3:o:microsoft:windows:-:::::::*

Configuration 2 (hide)

AND

cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*

cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Las versiones de Acrobat Reader 24.001.30356, 26.001.21367 y anteriores están afectadas por una vulnerabilidad de Modificación de Atributos de Prototipo de Objeto Controlada Incorrectamente (’Prototype Pollution’) que podría resultar en ejecución de código arbitrario en el contexto del usuario actual. La explotación de este problema requiere interacción del usuario, ya que la víctima debe abrir un archivo malicioso.

Information

Published : 2026-04-11 07:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-34621

Mitre link : CVE-2026-34621

CVE.ORG link : CVE-2026-34621

JSON object : View

Products Affected

adobe

acrobat_dc
acrobat
acrobat_reader_dc

apple

macos

microsoft

windows

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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