Running an outdated version of Adobe Reader is a significant security risk, as attackers frequently exploit legacy PDF readers to deliver ransomware.
To check your version:
| Version | Release Year | Last Security Update | Operating System Support | | :--- | :--- | :--- | :--- | | Adobe Reader 5.0 | 2001 | 2008 | Windows 98/ME, Mac OS 9 | | Adobe Reader 8.0 | 2006 | 2011 | Windows 2000/XP | | Adobe Reader 9.0 | 2008 | 2013 | Windows XP/Vista/7 | | Adobe Reader X | 2010 | 2015 | Windows XP SP3/7 (32-bit) | | Adobe Reader XI | 2012 | 2017 | Windows 7/8, Mac OS X 10.9 | | Acrobat Reader DC (Classic 2015) | 2015 | 2020 | Windows 7/8.1, macOS 10.12 | | Acrobat Reader DC (Classic 2017) | 2017 | 2022 | Windows 7 SP1, macOS 10.13 | | Acrobat Reader DC (Classic 2020) | 2020 | 2025 (Current LTS)* | Windows 10/11, macOS 11+ | | Acrobat Reader Continuous | Monthly | Monthly | Windows 10/11, macOS 11+ | versions of adobe reader
*The Classic 2020 track is the last version to support Windows 10 v1809 and Server 2016. Running an outdated version of Adobe Reader is
In 2015, Adobe moved to a continuous release model—no more version numbers like 12 or 13. Instead, they introduced Acrobat Reader DC ("Document Cloud"). Notable: Version 9