Junglewise Threat Intelligence

CVE-2026-81976: Adobe Acrobat Reader use-after-free

CVE-2026-81976 · Severity: high · CVSS 7.8 · Published 2026-09-08

Technologies: Adobe Acrobat, Apple macOS, Microsoft Windows, Adobe Acrobat Reader, Adobe Acrobat Dc, Adobe Acrobat Reader Dc. Vendors: Adobe, Apple, Microsoft.

Executive brief

Adobe Acrobat Reader is widely used to view and work with PDF documents in corporate and personal environments. A use-after-free vulnerability allows attackers to execute arbitrary code on a user's system when they open a malicious PDF file, potentially leading to data theft, malware installation, or system compromise.

Technical details

This is a use-after-free vulnerability in Adobe Acrobat Reader that allows arbitrary code execution in the context of the current user. The vulnerability requires user interaction—specifically, a victim must open a malicious PDF file to trigger the exploit. The defect likely stems from improper memory management in the PDF parsing or rendering engine, where a previously freed memory region is accessed or dereferenced. Exploitation results in arbitrary code execution with the privileges of the logged-in user. No patch details are currently available in the provided advisory.

Affected products

  • Adobe Acrobat Reader <UNKNOWN>

Timeline

  • 2026-09-08: disclosed

References

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