SWFTools commit 772e55a2 was discovered to contain a heap-buffer overflow via DCTStream::readHuffSym(DCTHuffTable*) at /xpdf/Stream.cc.
https://github.com/matthiaskramm/swftools/issues/182
https://github.com/Cvjark/Poc/blob/main/swftools/pdf2swf/CVE-2022-35094.md