April 13, 2026 · Applied Cybernetics Group
CVE-2026-34621 — Adobe Acrobat and Reader
Adobe Acrobat and Reader Prototype Pollution Vulnerability
- Added to KEV
2026-04-13- Federal due date
2026-04-27- Vendor
- Adobe
- Product
- Acrobat and Reader
- EPSS
- 93.6th percentile (score 0.110, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2026-34621
CISA short description
Adobe Acrobat and Reader contain a prototype pollution vulnerability that allows for arbitrary code execution.
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.