This vulnerability allows remote attackers to execute arbitrary code on affected
installations of 7-Zip. User interaction is required to exploit this
vulnerability in that the target must visit a malicious page or open a malicious
file.

The specific flaw exists within the parsing of SQFS files. The issue results
from the lack of proper validation of user-supplied data, which can result in a
write past the end of an allocated buffer. An attacker can leverage this
vulnerability to execute code in the context of the current process.