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Vulnerability record · CVE-2026-11736 · published 11 August 2026

CVE-2026-11736: Netgear rax20 firmware improper input validation vulnerability

Netgear · Rax20 Firmware

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

1.9 CVSS 4.0 Low EPSS 0.51% · top 58.7% CWE-20 · Improper input validationCWE-787 · Out-of-bounds write
1.9CVSS 4.0 base score
0.51%EPSS exploitation probability, 30 days
NoNot in CISA KEV
19Affected product versions listed by NVD
19References
9 Sep 2026Last modified by NVD

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.

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:

Affected products

19 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

Track CVE-2026-11736 inside VULONE

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-45620Netgear cbr40 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 4.6.3.6, …EPSS 2.0%9.8CVE-2021-45616Netgear cbr750 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR750 before 3.2.18.2, LAX20 before 1.1.6.28,…EPSS 2.0%9.8CVE-2021-45613Netgear cbr40 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 4.6.3.6, …EPSS 2.0%9.8CVE-2021-45621Netgear cbr40 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 3.2.18.2,…EPSS 2.0%9.8CVE-2021-45610Netgear d6220 firmware classic buffer overflow vulnerabilityCertain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D6220 before 1.0.0.66, D6400 before 1.0.0.100,…EPSS 1.4%9.8CVE-2021-45617Netgear cbr40 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, EAX20 before 1.0.0.48, …EPSS 2.1%9.8CVE-2021-45614Netgear d7000v2 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects D7000v2 before 1.0.0.74, LAX20 before 1.1.6.28…EPSS 2.0%9.8CVE-2021-45622Netgear cbr40 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 4.6.3.6, …EPSS 2.4%

Source: NIST National Vulnerability Database (record CVE-2026-11736), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.