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Description
OS command injection in the CWMP client (/ftl/bin/cwmp) of Small Cell Sercomm SCE4255W (FreedomFi Englewood) firmware before DG3934v3@2308041842 allows remote attackers controlling the ACS endpoint to execute arbitrary commands as root via a crafted TR-069 Download URL that is passed unescaped into the firmware upgrade pipeline.
References
neroteam.com/blog/freedomfi-sercomm-sce4255w-englewood
fcc.report/FCC-ID/P27-SCE4255W/4790935.pdf