Home › Exploited CVEs › CVE-2026-34621
CVE-2026-34621: Adobe Acrobat and Reader Prototype Pollution Vulnerability
Adobe Acrobat and Reader · in CISA KEV since 2026-04-13
2026-04-13added to KEV
2026-04-27federal remediation due date
7.09%EPSS exploit probability (30 days) 93.9th percentile
8.6 HIGHCVSS 3.1
Unknownknown ransomware use
2days from NVD publication to KEV
What it is
Adobe Acrobat and Reader contain a prototype pollution vulnerability that allows for arbitrary code execution.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| CWE | CWE-1321 |
|---|---|
| CVSS vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
| NVD published | 2026-04-11 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2026-34621.json · all KEV CVEs
Kevscope: daily CISA KEV + EPSS datasetThe whole KEV catalog joined with daily EPSS and CVSS scores as CSV/Parquet, refreshed daily. Free to download.
Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.
Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.