CVEvulnerability

CVE-2026-34621

8.6 HIGH Known exploited Published 2026-04-11 Modified 2026-10-26 Official page ↗

CISA Known Exploited Vulnerability

Adobe Acrobat and Reader Prototype Pollution Vulnerability — Adobe Acrobat and Reader

Adobe Acrobat and Reader contain a prototype pollution vulnerability that allows for arbitrary code execution.

Added to KEV
2026-04-13
Remediation due
2026-04-27
Ransomware use
Unknown
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://helpx.adobe.com/security/products/acrobat/apsb26-43.html ; https://nvd.nist.gov/vuln/detail/CVE-2026-34621
Status
Analyzed
Published
2026-04-11
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.6 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Weaknesses
CWE-1321

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.

Affected configurations

• adobe acrobat dc (< 26.001.21411) • adobe acrobat reader dc (< 26.001.21411) • adobe acrobat (>= 24.0.0 < 24.001.30362) • adobe acrobat (>= 24.0.0 < 24.001.30360)

Related

Weakness · CWE (1)

  • CWE-1321 Improperly Controlled Modification of Object Prototype Attributes weakness

References