Security Advisory Regarding Vulnerabilities in Adobe Acrobat / Reader

A critical security update for Adobe Acrobat and Adobe Acrobat Reader has been released.

If these vulnerabilities are exploited, various types of damage may occur, such as application crashes or attackers gaining control of a computer. Because the potential impact of an attack is significant, please apply the security updates as soon as possible.

Affected Versions

• Acrobat DC / Reader DC (Continuous): version 26.001.21651 and earlier
• Acrobat 2024 (Classic 2024): version 24.001.30356 and earlier

Solution

Please update to the latest version.

How to Check Your Version

1. Launch Adobe Acrobat (or Reader).
2. Click the menu bar or the "hamburger menu" (three lines icon) in the upper-left corner.
3. Select Help > About Adobe Acrobat... located near the bottom of the menu.

How to Update

1. From the menu bar or the "hamburger menu" in Adobe Acrobat (or Reader), select Help > Check for Updates.
2. Follow the on-screen instructions to complete the update.

Important Notes on Updating

• 「"Programs in Use" Message: If a message stating "The program is in use" appears, please close all Acrobat and Reader windows and then click Retry.
• Multiple Updates/Reboots: The update process may take some time or require a system restart. Please run "Check for Updates" repeatedly until the message "No updates available" is displayed.。
• Creative Cloud Users: If you use the version of Acrobat included with Adobe Creative Cloud, you can update it directly via the Creative Cloud Desktop app.

https://www.ipa.go.jp/security/security-alert/2026/0610-adobereader.html