Out-of-bounds array write in Xpdf 4.05 and earlier, due to missing object type check in AcroForm field reference.
Out-of-bounds array write in Xpdf 4.05 and earlier, triggered by an invalid VerticesPerRow value in a PDF shading dictionary.
Out-of-bounds array write in Xpdf 4.05 and earlier, triggered by long Unicode sequence in ActualText.
Out-of-bounds array write in Xpdf 4.05 and earlier, triggered by negative object number in indirect reference in the input PDF file.
Out-of-bounds array write in Xpdf 4.05 and earlier, triggered by an invalid character code in a Type 1 font. The root problem was a bounds check that was being optimized away by modern compilers.