Design/Logic Flaw

Simple Machines Forum SMF, probably 1.1.4, relies on "randomly generated static" to hinder brute-force attacks on the WAV file aka audio CAPTCHA, which allows remote attackers to pass the CAPTCHA test via an automated attack that considers Hamming distances. NOTE: this issue reportedly exists...

CVE-2008-2019

Simple Machines Forum SMF, probably 1.1.4, relies on "randomly generated static" to hinder brute-force attacks on the WAV file aka audio CAPTCHA, which allows remote attackers to pass the CAPTCHA test via an automated attack that considers Hamming distances. NOTE: this issue reportedly exists...