CVE-2026-34621
Received
Published: 11 Apr 2026, 06:45
Last modified:11 Apr 2026, 17:06
Vulnerability Summary
Overall Risk (default)
high
70/100 CVSS Score
9.6 CRITICAL
v3.1 (cve.org)
EPSS Score
0.24% LOW
0% probability
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected
Timeline
11 Apr 2026, 06:45
Published
Vulnerability first disclosed
11 Apr 2026, 17:06
Last Modified
Vulnerability information updated
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
- v3.1•CRITICAL•Score: 9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS Trends
Current EPSS score: 0.24%• Percentile: 46%
Techniques & Countermeasures
- CWE-1321•Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.
Affected Systems
- adobe•acrobat reader
≤ 26.001.21367