CVE-2021-31802
moderate-risk
Published 2021-04-26
NETGEAR R7000 1.0.11.116 devices have a heap-based Buffer Overflow that is exploitable from the local network without authentication. The vulnerability exists within the handling of an HTTP request. An attacker can leverage this to execute code as root. The problem is that a user-provided length value is trusted during a backup.cgi file upload. The attacker must add a \n before the Content-Length header.
Do I need to act?
!
13.7% chance of exploitation in next 30 days
EPSS score — higher than 86% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10
High
ADJACENT_NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
References (4)
44
/ 100
moderate-risk
Severity
27/34 · High
Exploitability
12/34 · Low
Exposure
5/34 · Minimal