CVE-2016-9296: 7-Zip p7zip

High severity, CVSS 7.5. EPSS: 7% chance of exploitation in the next 30 days.

A null pointer dereference bug affects the 16.02 and many old versions of p7zip. A lack of null pointer check for the variable folders.PackPositions in function CInArchive::ReadAndDecodePackedStreams in CPP/7zip/Archive/7z/7zIn.cpp, as used in the 7z.so library and in 7z applications, will cause a crash and a denial of service when decoding malformed 7z files.

Affected products

• 7-Zip p7zip: version 16.02 only

Published 2016-11-12. Last modified 2026-06-17.