Adobe Acrobat Reader DC TIF File Parsing Integer Overflow Remote Code Execution Vulnerability

June 9th, 2026

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Adobe Acrobat Reader DC. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of TIF files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process.

Additional Details

Adobe has issued an update to correct this vulnerability. More details can be found at:
https://helpx.adobe.com/security/products/acrobat/apsb26-63.html

Disclosure Timeline

  • 2026-03-30 - Vulnerability reported to vendor
  • 2026-06-09 - Coordinated public release of advisory
  • 2026-06-09 - Advisory Updated

Credit

Seiji Sakurai (@HeapSmasher)

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