CVE-2022-27646 (cbr40_firmware, lbr1020_firmware, lbr20_firmware, r6400_firmware, r6700_firmware, r6900p_firmware, r7000_firmware, r7000p_firmware, r7850_firmware, r7960p_firmware, r8000_firmware, r8000p_firmware, rax200_firmware, rax75_firmware, rax

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the circled daemon. A crafted circleinfo.txt file can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15879.

attackers authentication buffer code context cve daemon exploit file flaw length netgear network overflow root routers trigger txt vulnerability zdi