Security Advisory

Adobe Product Security Update Advisory (CVE-2026-34621)

  • Apr 14 2026
Adobe Product Security Update Advisory (CVE-2026-34621)

Overview.

Adobe has issued a security update to address an improper modification of object prototype properties vulnerability (CVE-2026-34621) in Acrobat, Acrobat Reader, and Acrobat 2024.
the vulnerability is present in certain lower versions and has a potential security impact if exploited.

Affected Products and Versions.

  • Acrobat DC versions: 26.001.21367 and earlier.
  • Acrobat Reader DC versions: 26.001.21367 and earlier.
  • Acrobat 2024 (Windows) versions: 24.001.30356 or earlier.
  • Acrobat 2024 (Mac) version: 24.001.30356 or earlier.

Resolved versions.

  • The CVE-2026-34621 patch was available in the following versions
  • Acrobat DC versions: 26.001.21411.
  • Acrobat Reader DC version: 26.001.21411.
  • Acrobat 2024 (Windows) version: 24.001.30362.
  • Acrobat 2024 (Mac) version: 24.001.30360.

Advisory.

Adobe has addressed the vulnerabilities through the latest security updates.
affected products should be updated to the patched version.
the official notice and additional technical information can be found in the APSB26-43 bulletin: https://helpx.adobe.com/security/products/acrobat/apsb26-43.html.

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