Linux Mint Xreader PDF File Parsing Type Confusion Remote Code Execution Vulnerability

September 18th, 2026
ZDI-26-715 ZDI-CAN-30793

CVE ID

CVE-2026-19772

CVSS Score

7.8 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

Linux Mint

Affected Products

Xreader

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Linux Mint Xreader. 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 PDF files. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current user.

Additional Details

Linux Mint has issued an update to correct this vulnerability. More details can be found at:
https://github.com/linuxmint/xreader/commit/28ee72cc2779a3716b7d00da1aa87da992648d24

Disclosure Timeline

  • 2026-07-16 - Vulnerability reported to vendor
  • 2026-09-18 - Coordinated public release of advisory
  • 2026-09-18 - Advisory Updated

Credit

Anonymous

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