CVE-2021-27239: high-severity vulnerability in NETGEAR Multiple Routers
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.8%
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. Was ZDI-CAN-11851.
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
NETGEAR · Multiple RoutersRelated CVEs — NETGEAR Multiple Routers
In the same product, most dangerous first.
CVE-2020-27866HIGHCVE-2020-27866EPSS 8.7%CVE-2020-15636HIGHCVE-2020-15636EPSS 8.5%CVE-2021-34865HIGHCVE-2021-34865EPSS 3.1%CVE-2020-27867MEDIUMCVE-2020-27867EPSS 2.2%CVE-2023-35721HIGHNETGEAR Multiple Routers curl_post Improper Certificate Validation Remote Code Execution VulnerabilityEPSS 1.0%CVE-2020-17409MEDIUMCVE-2020-17409EPSS 0.7%