Vulnerability Analysis
Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)
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.
CISA KEV
CVSS Base Score
8.6
HIGH
Exploitability:1.9
Impact Score:6.1
Temporal Score:8.6
EPSS:7.09%
Threat Intelligence Signals
CISA KEV
YES
KEV Date Added
2026-04-13
Ransomware Use
Unknown
KEV Due Date
2026-04-27
VulnCheck In-the-Wild
No
Nuclei Template
No
EPSS Score
7.086%
EPSS Percentile
93.4th pct
GHSA ID
GitHub Severity
CRITICAL
SSVC Exploitation
—
SSVC Automatable
—
Vulnerability Class
—
Identity & Timeline
| Status | - |
| Assigning Authority | - |
| CVSS Version / Source | - |
| Reserved | - |
| Published | - |
| Patch Date (date_public) | - |
| Exploit DB Date | - |
| First GitHub PoC Date | - |
| Last Updated | - |
| Time to Patch (Days to fix) | - |
| Exploit Release Gap | - |
| PoC Release Gap | - |
| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| No affected products specified. | ||
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