CVE-2026-9216

Management UI crash via stack buffer overflow

Published Sep 8, 2026 · Updated Sep 9, 2026

Stack-based buffer overflow in NETGEAR RAX30, RAX35, RAX38, RAX40, and RAXE300 firmware allows network-adjacent attackers to crash the management UI. The vendor identifies insufficient validation of management-interface input but has not disclosed the affected request, field, or operation that overwrites the stack buffer. Reachability requires adjacent network access such as Wi-Fi credentials; the crash interrupts only the management UI and leaves Wi-Fi and core routing services available.

CVSS severity3.5
Low
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in NETGEAR RAX30, RAX35, RAX38, RAX40, and RAXE300 firmware allows network-adjacent attackers to crash the management UI. The vendor identifies insufficient validation of management-interface input but has not disclosed the affected request, field, or operation that overwrites the stack buffer. Reachability requires adjacent network access such as Wi-Fi credentials; the crash interrupts only the management UI and leaves Wi-Fi and core routing services available.

The record

CVE
CVE-2026-9216
Published
Sep 8, 2026
Updated
Sep 9, 2026
Vendor
NETGEAR
Product
RAX30
Classifications
CWE-121, T1499.004
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <V1.0.9.92

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

NETGEAR · RAX30version=0 <V1.0.9.92
NETGEAR · RAX38version=0 <V1.0.6.106
NETGEAR · RAX40version=0 <V1.0.6.106
NETGEAR · RAX35version=0 <V1.0.10.72
NETGEAR · Nighthawk AXE7800 Tri-Band WiFi 6E Router (RAXE300)version=0 <V1.0.10.72

Published CVSS scores

1.2NETGEARCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/AU:Y/R:A/V:D/RE:L/U:Amber
3.5NETGEARCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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