Browser Security

Adobe Patches Actively Exploited Acrobat Reader RCE Flaw (CVE-2026-34621)

Nishant Sharma

13 Apr 2026 — 1 min read

This newsletter is AI generated and may hallucinate sometimes 😊

Adobe released an out-of-band security update addressing CVE-2026-34621, a critical prototype pollution vulnerability in Acrobat and Reader that could lead to arbitrary code execution (RCE).
The vulnerability affects multiple versions of Adobe Acrobat DC and Acrobat Reader DC on both Windows and macOS, and has been actively exploited in the wild.
Users are strongly urged to update to the latest versions, specifically Continuous Track 23.006.20360 or Extended Support Release 20.005.30520, to mitigate immediate risks.

Source: The Hacker News | Date: April 12, 2026

References

Adobe Patches Actively Exploited Acrobat Reader Flaw CVE-2026-34621 - The Hacker News
CVE-2026-34621: Adobe Acrobat Reader Prototype Pollution RCE - The CyberThrone
Adobe fixes actively exploited Acrobat Reader flaw CVE-2026-34621 - Security Affairs

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