Authentication Bypass Vulnerability in NETGEAR R7800 Router
CVE-2021-27254

6.3MEDIUM

Key Information:

Vendor

Netgear
Status
R7800
Vendor
CVE Published:
5 March 2021

What is CVE-2021-27254?

This vulnerability allows network-adjacent attackers to bypass authentication on installations of the NETGEAR R7800 router. The flaw resides in the apply_save.cgi endpoint, which uses a hard-coded encryption key. By exploiting this vulnerability, attackers can execute arbitrary code with root privileges, leading to potential unauthorized access and control over the device. Users are highly recommended to apply available patches and updates to mitigate any associated risks.

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Affected Version(s)

R7800 firmware version 1.0.2.76

References

https://www.zerodayinitiative.com/advisories/ZDI-21-252/
x_refsource_MISC
https://kb.netgear.com/000062883/Security-Advisory-for-Mu...
x_refsource_MISC

CVSS V3.1

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

84c0
JSON
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