Arris routers SBR-AC1900P 1.0.7-B05 SBR-AC3200P 1.0.7-B05 and SBR-AC1200P 1.0.5-B05 were discovered to contain a command injection vulnerability in the pptp function via the pptpUserName and pptpPassword parameters. This vulnerability allows attackers to execute arbitrary commands via a crafted request.