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CVE-2026-11736

Stack-based buffer overflow vulnerability in some NETGEAR Nighthawk routers

MEDIUM
4.9
CVSS Score
Published: August 11, 2026 at 03:06 PM UTC
Updated: September 9, 2026 at 03:15 AM UTC
38 products affected across 1 vendorRAX50 FirmwareRAX45 FirmwareRAX20 Firmware

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Severity
MEDIUM4.9
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

RAX20 Firmware· NETGEAR
95%
All versions
netgear-rax20 (same device)
RAX35V2 Firmware· NETGEAR
95%
v < 1.0.16.132v < V1.0.16.132
Affected range stops below 1.0.16.132, so it looks safe — our inference, not a vendor statement
Affected range stops below V1.0.16.132, so it looks safe — our inference, not a vendor statement
netgear-rax35v2 (same device)
RAX41 Firmware· NETGEAR
95%
All versions
netgear-rax41 (same device)
RAX41V2 Firmware· NETGEAR
95%
v < 1.1.4.28v < V1.1.4.28
Affected range stops below 1.1.4.28, so it looks safe — our inference, not a vendor statement
Affected range stops below V1.1.4.28, so it looks safe — our inference, not a vendor statement
netgear-rax41v2 (same device)
RAX42 Firmware· NETGEAR
95%
All versions
netgear-rax42 (same device)
RAX42V2 Firmware· NETGEAR
95%
v < 1.1.4.28v < V1.1.4.28
Affected range stops below 1.1.4.28, so it looks safe — our inference, not a vendor statement
Affected range stops below V1.1.4.28, so it looks safe — our inference, not a vendor statement
netgear-rax42v2 (same device)
RAX43 Firmware· NETGEAR
95%
v < 1.0.16.132v < V1.0.16.132
Affected range stops below 1.0.16.132, so it looks safe — our inference, not a vendor statement
Affected range stops below V1.0.16.132, so it looks safe — our inference, not a vendor statement
netgear-rax43 (same device)
RAX43V2 Firmware· NETGEAR
95%
v < 1.1.4.28v < V1.1.4.28
Affected range stops below 1.1.4.28, so it looks safe — our inference, not a vendor statement
Affected range stops below V1.1.4.28, so it looks safe — our inference, not a vendor statement
netgear-rax43v2 (same device)
RAX45 Firmware· NETGEAR
95%
All versions
netgear-rax45 (same device)
RAX49S Firmware· NETGEAR
95%
v < 1.1.4.28v < V1.1.4.28
Affected range stops below 1.1.4.28, so it looks safe — our inference, not a vendor statement
Affected range stops below V1.1.4.28, so it looks safe — our inference, not a vendor statement
netgear-rax49s (same device)

References (19)

ProductPatch
Source: cverecord
https://www.netgear.com/support/product/rax41/
ProductPatch
Source: cverecord
https://www.netgear.com/support/product/rax41v2/
ProductPatch
Source: cverecord
https://www.netgear.com/support/product/rax42/
ProductPatch
Source: cverecord
https://www.netgear.com/support/product/rax43v2/
ProductPatch
Source: cverecord
https://www.netgear.com/support/product/rax20/
ProductPatch
Source: cverecord
https://www.netgear.com/support/product/rax45/
ProductPatch
Source: cverecord
https://www.netgear.com/support/product/rax42v2/
ProductPatch
Source: cverecord
https://www.netgear.com/support/product/rax35v2/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.9MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-20CWE-787

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