Remote Code Execution Vulnerability in NETGEAR R7800 Firmware
CVE-2021-27252

8.8HIGH

Key Information:

Vendor

Netgear
Status
R7800
Vendor
CVE Published:
14 April 2021

What is CVE-2021-27252?

This vulnerability enables network-adjacent attackers to execute arbitrary code on NETGEAR R7800 devices running firmware version 1.0.2.76. The flaw arises due to inadequate validation of user-supplied input during the handling of vendor-specific DHCP opcodes. As a result, attackers can potentially exploit this issue to execute commands in the context of the root user, compromising the integrity of the affected systems without requiring authentication.

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Affected Version(s)

R7800 firmware version 1.0.2.76

References

https://kb.netgear.com/000062883/Security-Advisory-for-Mu...
x_refsource_MISC
https://www.zerodayinitiative.com/advisories/ZDI-21-248/
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

atdog (@atdog_tw)
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