AdvisoriesCVE-2026-34621

Adobe Acrobat and Reader Prototype Pollution Vulnerability

AdobeAcrobat and ReaderAdded April 13, 2026

CISA Known Exploited Vulnerabilities Data

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.

CISA Due Date

April 27, 2026 (federal agency requirement)

Known Ransomware Campaign Use

Unknown

Notes

https://helpx.adobe.com/security/products/acrobat/apsb26-43.html ; https://nvd.nist.gov/vuln/detail/CVE-2026-34621

External References

View on CISA KEV View CVE-2026-34621 on NVD Search MITRE ATT&CK

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Data sourced from the CISA Known Exploited Vulnerabilities catalog. CISA does not endorse any commercial product or service.