CVE-2021-27251

8.8HIGH

Key Information:

Vendor
Netgear
Status
R7800
Vendor
CVE Published:
14 April 2021

Summary

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.

Affected Version(s)

R7800 1.0.2.76

References

https://kb.netgear.com/000062883/Security-Advisory-for-Mu...
x_refsource_MISC
https://www.zerodayinitiative.com/advisories/ZDI-21-247/
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

Team FLASHBACK: Pedro Ribeiro (@pedrib1337 | [email protected]) + Radek Domanski (@RabbitPro)
.