CVSS: 8.8EPSS: 0%CPEs: 86EXPL: 0CVE-2021-27256 – NETGEAR R7800 apply_save.cgi rc_service Command Injection Remote Code Execution Vulnerability
https://notcve.org/view.php?id=CVE-2021-27256
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of the rc_service parameter provided to apply_save.cgi. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. • https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders https://www.zerodayinitiative.com/advisories/ZDI-21-262 • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •
CVSS: 8.8EPSS: 0%CPEs: 86EXPL: 0CVE-2021-27254 – NETGEAR Nighthawk R7800 Use of Hard-coded Password Authentication Bypass Vulnerability
https://notcve.org/view.php?id=CVE-2021-27254
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7800. Authentication is not required to exploit this vulnerability. The specific flaw exists within the apply_save.cgi endpoint. This issue results from the use of hard-coded encryption key. An attacker can leverage this vulnerability to execute arbitrary code in the context of root. • https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders https://www.zerodayinitiative.com/advisories/ZDI-21-252 • CWE-259: Use of Hard-coded Password CWE-798: Use of Hard-coded Credentials •
CVSS: 8.8EPSS: 0%CPEs: 86EXPL: 0CVE-2021-27252 – NETGEAR R7800 udchpd DHCP_REQUEST Command Injection Remote Code Execution Vulnerability
https://notcve.org/view.php?id=CVE-2021-27252
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the vendor_specific DHCP opcode. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. • https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders https://www.zerodayinitiative.com/advisories/ZDI-21-248 • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •
CVSS: 8.8EPSS: 0%CPEs: 72EXPL: 0CVE-2021-27239 – NETGEAR Multiple Routers SSDP Stack-based Buffer Overflow Remote Code Execution Vulnerability
https://notcve.org/view.php?id=CVE-2021-27239
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400 and R6700 firmware version 1.0.4.98 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the upnpd service, which listens on UDP port 1900 by default. A crafted MX header field in an SSDP message 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. • https://kb.netgear.com/000062820/Security-Advisory-for-Stack-based-Buffer-Overflow-Remote-Code-Execution-Vulnerability-on-Some-Routers-PSV-2020-0432 https://www.zerodayinitiative.com/advisories/ZDI-21-206 • CWE-121: Stack-based Buffer Overflow •
CVSS: 8.8EPSS: 0%CPEs: 86EXPL: 0CVE-2021-27251 – NETGEAR Nighthawk R7800 ready-genie-cloud Insecure Download of Critical Component Remote Code Execution Vulnerability
https://notcve.org/view.php?id=CVE-2021-27251
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Nighthawk R7800. Authentication is not required to exploit this vulnerability The specific flaw exists within handling of firmware updates. The issue results from a fallback to a insecure protocol to deliver updates. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12308. • https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders https://www.zerodayinitiative.com/advisories/ZDI-21-247 • CWE-319: Cleartext Transmission of Sensitive Information •