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CVE-2026-11736— Stack-based buffer overflow vulnerability in some NETGEAR Nighthawk routers

Quick assessment

Affected
NETGEAR RAX20
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NETGEAR rax20是美国NETGEAR公司的一款WiFi路由器。 NETGEAR RAX20存在输入验证错误漏洞，该漏洞源于栈缓冲区溢出，可能导致已认证管理员用户未经授权修改路由器软件和功能。

CVSS 1.9 · Low EPSS 0.51% · P41

Affected Version Matrix 19

VendorProduct Version RangeStatus
NETGEAR RAX20 < * affected
NETGEAR RAX35v2 < V1.0.16.132 affected
NETGEAR RAX41 < * affected
NETGEAR RAX41v2 < V1.1.4.28 affected
NETGEAR RAX42 < * affected
NETGEAR RAX42v2 < V1.1.4.28 affected
NETGEAR RAX43 < V1.0.16.132 affected
NETGEAR RAX43v2 < V1.1.4.28 affected
NETGEAR RAX45 < * affected
NETGEAR RAX49S < V1.1.4.28 affected
NETGEAR RAX50 < V1.0.16.132 affected
NETGEAR RAX50S < * affected
NETGEAR RAX50v2 < V1.1.4.28 affected
NETGEAR RAX54Sv2 < V1.1.4.28 affected
NETGEAR RAX54v2 < V1.1.4.28 affected
NETGEAR RAXE450 < * affected
NETGEAR RAXE500 < V1.2.14.114 affected
NETGEAR XR1000 < V1.1.0.22 affected
NETGEAR XR1000v2 < V1.1.0.22 affected
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I. Basic Information for CVE-2026-11736

Vulnerability Information
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Vulnerability Title
Stack-based buffer overflow vulnerability in some NETGEAR Nighthawk routers
Source: CVE Program / CVE List V5
Vulnerability Description
A stack-based buffer overflow vulnerability affects certain NETGEAR models allowing an authenticated admin user to make unauthorized modification to router software and functionality.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:H/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:L/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
NETGEAR RAX20 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NETGEAR rax20是美国NETGEAR公司的一款WiFi路由器。 NETGEAR RAX20存在输入验证错误漏洞，该漏洞源于栈缓冲区溢出，可能导致已认证管理员用户未经授权修改路由器软件和功能。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
NETGEAR RAX20 0 ~ * -
NETGEAR RAX35v2 0 ~ V1.0.16.132 -
NETGEAR RAX41 0 ~ * -
NETGEAR RAX41v2 0 ~ V1.1.4.28 -
NETGEAR RAX42 0 ~ * -
NETGEAR RAX42v2 0 ~ V1.1.4.28 -
NETGEAR RAX43 0 ~ V1.0.16.132 -
NETGEAR RAX43v2 0 ~ V1.1.4.28 -
NETGEAR RAX45 0 ~ * -
NETGEAR RAX49S 0 ~ V1.1.4.28 -
NETGEAR RAX50 0 ~ V1.0.16.132 -
NETGEAR RAX50S 0 ~ * -
NETGEAR RAX50v2 0 ~ V1.1.4.28 -
NETGEAR RAX54Sv2 0 ~ V1.1.4.28 -
NETGEAR RAX54v2 0 ~ V1.1.4.28 -
NETGEAR RAXE450 0 ~ * -
NETGEAR RAXE500 0 ~ V1.2.14.114 -
NETGEAR XR1000 0 ~ V1.1.0.22 -
NETGEAR XR1000v2 0 ~ V1.1.0.22 -

II. Public POCs for CVE-2026-11736

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III. Intelligence Information for CVE-2026-11736

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Vendor Advisories for CVE-2026-11736 (1)

Vendor Pages for CVE-2026-11736 (18)

Same Patch Batch · NETGEAR · 2026-08-11 · 9 CVEs total

CVE-2026-11814 4.9 MEDIUM Command injection vulnerability in certain NETGEAR Nighthawk and Orbi routers
CVE-2026-11739 4.9 MEDIUM Command injection vulnerability in some NETGEAR Nighthawk devices
CVE-2026-11737 4.3 MEDIUM Some NETGEAR Nighthawk devices allow administrators to tamper with the device
CVE-2026-11738 4.3 MEDIUM Insufficient input validation in certain NETGEAR Nighthawk routers allows administrators t
CVE-2026-9214 4.3 MEDIUM Insufficient input validation in NETGEAR R7000 router allows administrators to tamper with
CVE-2026-11735 1.9 LOW Stack-based buffer overflow vulnerability in some NETGEAR Nighthawk models
CVE-2026-11734 1.1 LOW Device administrator can interrupt the normal operation of some NETGEAR Nighthawk devices.
CVE-2026-11733 1.1 LOW Buffer overflow vulnerability in some NETGEAR Nighthawk routers

IV. Related Vulnerabilities

Same product: RAX20
Same vendor: NETGEAR
Same weakness: CWE-20

V. Comments for CVE-2026-11736

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