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    CVE-2026-11736

    A stack-based buffer overflow vulnerability affects certain NETGEAR models allowing an authenticated admin user to make unauthorized modification to router software and functionality.

    Published:Aug 11, 2026
    Last Modified:Sep 9, 2026
    EPS:Aug 11, 2026
    EPSS Score:0.00313
    CVSS Score:4.9

    Affected Products

    Vendor
    Netgear
    Product
    Rax20
    Vendor
    Netgear
    Product
    Rax20 Firmware
    Vendor
    Netgear
    Product
    Rax35v2
    Vendor
    Netgear
    Product
    Rax35v2 Firmware
    Vendor
    Netgear
    Product
    Rax41
    Vendor
    Netgear
    Product
    Rax41 Firmware
    Vendor
    Netgear
    Product
    Rax41v2
    Vendor
    Netgear
    Product
    Rax41v2 Firmware
    Vendor
    Netgear
    Product
    Rax42
    Vendor
    Netgear
    Product
    Rax42 Firmware
    Vendor
    Netgear
    Product
    Rax42v2
    Vendor
    Netgear
    Product
    Rax42v2 Firmware
    Vendor
    Netgear
    Product
    Rax43
    Vendor
    Netgear
    Product
    Rax43 Firmware
    Vendor
    Netgear
    Product
    Rax43v2
    Vendor
    Netgear
    Product
    Rax43v2 Firmware
    Vendor
    Netgear
    Product
    Rax45
    Vendor
    Netgear
    Product
    Rax45 Firmware
    Vendor
    Netgear
    Product
    Rax49s
    Vendor
    Netgear
    Product
    Rax49s Firmware
    Vendor
    Netgear
    Product
    Rax50
    Vendor
    Netgear
    Product
    Rax50 Firmware
    Vendor
    Netgear
    Product
    Rax50s
    Vendor
    Netgear
    Product
    Rax50s Firmware
    Vendor
    Netgear
    Product
    Rax50v2
    Vendor
    Netgear
    Product
    Rax50v2 Firmware
    Vendor
    Netgear
    Product
    Rax54sv2
    Vendor
    Netgear
    Product
    Rax54sv2 Firmware
    Vendor
    Netgear
    Product
    Rax54v2
    Vendor
    Netgear
    Product
    Rax54v2 Firmware
    Vendor
    Netgear
    Product
    Raxe450
    Vendor
    Netgear
    Product
    Raxe450 Firmware
    Vendor
    Netgear
    Product
    Raxe500
    Vendor
    Netgear
    Product
    Raxe500 Firmware
    Vendor
    Netgear
    Product
    Xr1000
    Vendor
    Netgear
    Product
    Xr1000 Firmware
    Vendor
    Netgear
    Product
    Xr1000v2
    Vendor
    Netgear
    Product
    Xr1000v2 Firmware

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-104 Cross Zone Scripting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-109 Object Relational Mapping Injection
    CAPEC-110 SQL Injection through SOAP Parameter Tampering
    CAPEC-120 Double Encoding
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-136 LDAP Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-153 Input Data Manipulation
    CAPEC-182 Flash Injection
    CAPEC-209 XSS Using MIME Type Mismatch
    CAPEC-22 Exploiting Trust in Client
    CAPEC-23 File Content Injection
    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-250 XML Injection
    CAPEC-261 Fuzzing for garnering other adjacent user/sensitive data
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-28 Fuzzing
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-473 Signature Spoof
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-588 DOM-Based XSS
    CAPEC-63 Cross-Site Scripting (XSS)
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-664 Server Side Request Forgery
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-73 User-Controlled Filename
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-81 Web Server Logs Tampering
    CAPEC-83 XPath Injection
    CAPEC-85 AJAX Footprinting
    CAPEC-88 OS Command Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

    Related CVEs

    CVE-2026-11735 (CVSS 1.9) — A stack-based buffer overflow vulnerability affects the listed NETGEAR models allowing an authenticated admin …
    CVE-2026-11738 (CVSS 4.3) — Insufficient input validation vulnerability in the listed NETGEAR models allows authenticated administrators c…
    CVE-2026-11739 (CVSS 4.9) — A command injection vulnerability in certain affected NETGEAR Nighthawk devices allows a network-adjacent att…
    CVE-2026-11737 (CVSS 4.3) — Insufficient input validation vulnerability in the listed NETGEAR models allows authenticated administrators …
    CVE-2026-11814 (CVSS 4.9) — A command injection vulnerability in the listed NETGEAR models allows a network-adjacent attacker with the abi…
    CVE-2026-0418 (CVSS 4.3) — Insufficient configuration management in the listed devices allows authenticated administrators connected to t…
    CVE-2026-0417 (CVSS 4.3) — Insufficient input validation vulnerability in the listed NETGEAR devices allows authenticated administrators …
    CVE-2026-9210 (CVSS 4.9) — Insufficient input validation vulnerability in the listed NETGEAR models allows authenticated administrators c…
    CVE-2026-0410 (CVSS 1.9) — Authenticated administrators connected to the local network can gain elevated access to the router and make u…
    CVE-2021-34983 (CVSS 6.5) — NETGEAR Multiple Routers httpd Missing Authentication for Critical Function Information Disclosure Vulnerabili…

    References

    https://kb.netgear.com/000070887/August-2026-NETGEAR-Security-Advisory
    https://www.netgear.com/support/product/rax20/
    https://www.netgear.com/support/product/rax35v2/
    https://www.netgear.com/support/product/rax41/
    https://www.netgear.com/support/product/rax41v2/
    https://www.netgear.com/support/product/rax42/
    https://www.netgear.com/support/product/rax42v2/
    https://www.netgear.com/support/product/rax43/
    https://www.netgear.com/support/product/rax43v2/
    https://www.netgear.com/support/product/rax45/
    https://www.netgear.com/support/product/rax49s/
    https://www.netgear.com/support/product/rax50/
    https://www.netgear.com/support/product/rax50s/
    https://www.netgear.com/support/product/rax50v2/
    https://www.netgear.com/support/product/rax54sv2/
    https://www.netgear.com/support/product/raxe450/
    https://www.netgear.com/support/product/raxe500/
    https://www.netgear.com/support/product/xr1000/
    https://www.netgear.com/support/product/xr1000v2/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High