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Adobe security patch release for CVE-2026-34621

Security Patch Release
First reported
Last updated
Happening score
H score 43
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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About this happening: Ivanti released a security update for on-prem Endpoint Manager Mobile (EPMM) covering CVE-2026-5786, CVE-2026-5787, CVE-2026-5788, and CVE-2026-7821. The patch addresses high-seve...

Latest development: 07.05.2026 20:55

Ivanti released fixes for CVE-2026-5786, CVE-2026-5787, CVE-2026-5788, and CVE-2026-7821 in Endpoint Manager Mobile (EPMM). The updates apply only to on-prem EPMM before versions 12.6.1.1, 12.7.0.1, and 12.8.0.1, and Ivanti said the issues are not present in Ivanti Neurons for MDM, Ivanti EPM, Ivanti Sentry, or other Ivanti products.

Open Happening

Timeline

  1. 12.04.2026 07:25 2 articles · 3mo 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 · 3mo 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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