CVE-2021-27257: medium-severity vulnerability in NETGEAR R7800
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.3%
This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information 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 downloading of files via FTP. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-12362.
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected products
NETGEAR · R7800Related CVEs — NETGEAR R7800
In the same product, most dangerous first.
CVE-2021-27255MEDIUMCVE-2021-27255EPSS 1.4%CVE-2021-27253HIGHCVE-2021-27253EPSS 1.3%CVE-2021-27252HIGHCVE-2021-27252EPSS 1.2%CVE-2021-27256HIGHCVE-2021-27256EPSS 1.0%CVE-2021-27251HIGHCVE-2021-27251EPSS 0.8%CVE-2021-34947HIGHNETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 0.5%