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Adobe security patch release for CVE-2026-34621

Security Patch Release
First reported
Last updated
Happening score
H score 58
2 unique sources, 2 articles

Summary

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Adobe issued emergency updates for Acrobat Reader, Acrobat DC, and Acrobat 2024 after CVE-2026-34621 was found actively exploited in the wild. The patch closes a prototype pollution flaw that could enable arbitrary code execution on Windows and macOS installations.

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Timeline

  1. 12.04.2026 07:25 2 articles · 1mo ago

    Adobe releases emergency fixes for CVE-2026-34621 in Acrobat products

    Mitigation Patch Update

    Adobe released emergency updates for Acrobat Reader DC, Acrobat DC, and Acrobat 2024 on Windows and macOS to fix CVE-2026-34621, a prototype pollution flaw that could allow arbitrary code execution. Adobe said it was aware of active exploitation in the wild and published fixed builds for the affected versions.

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  2. 12.04.2026 07:25 1 articles · 1mo ago

    Adobe revises CVE-2026-34621 advisory after exploitation details emerge

    Technical Analysis Update

    Adobe revised its CVE-2026-34621 advisory on April 12, 2026, changing the CVSS score to 8.6 and the attack vector from Network (AV:N) to Local (AV:L). Researchers said the flaw could run malicious JavaScript when opening specially crafted PDF documents in Adobe Reader, and evidence suggested exploitation may have been underway since December 2025.

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