Would it make a difference we if use a product such as SumatraPDF or FoxIt?
closed as not constructive by Linker3000, Tom Wijsman, studiohack♦ Nov 16 '11 at 17:55
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It depends entirely on the reader's implementation and the nature of the bug. Like @Luke says above, some bugs are in the underlying OS or other libraries. In those cases, there's a fair chance that other readers will be affected (but no guarantee, they may use a different library call, have their own implementation, sanitize the input better, etc.). Other exploits like buffer overflows are more specific to the program and are much less likely to impact other readers.