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Netgear EX8000 CVE-2025-50526

CRITICAL
Command Injection (CWE-77)
2025-12-23 cve@mitre.org
9.8
CVSS 3.1 · Vendor: mitre
View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Reach EX8000 web management interface
  2. Delivery
    Send crafted request to switch_status
  3. Exploit
    Inject shell metacharacters into command
  4. Execution
    Execute arbitrary commands on device
  5. Impact
    Full compromise of extender

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Command injection prevention
MITRE ATT&CK

1 technique across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires reaching the EX8000's management interface and submitting input to the switch_status function that is passed unsanitized into a system command (CWE-77). The available sources do not describe the precise trigger (which parameter, endpoint, or whether prior authentication is needed), so those specifics are unverified. Limiting factors: the affected scope is narrowly a single firmware build (1.0.0.126) of one consumer extender model, and in practice a Wi-Fi mesh extender's administrative functions are typically exposed only on the local/trusted network rather than the public Internet, which constrains realistic reachability despite the AV:N rating. Authentication requirements are not confirmed from the available data beyond the CVSS PR:N claim.

Impact

Signals are mixed but lean toward elevated priority. The CVSS 3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N, C:H/I:H/A:H) models an unauthenticated, low-complexity network attack achieving full compromise, consistent with CWE-77 command injection yielding device takeover. Against this, EPSS is only 1.18% (67th percentile), indicating low modeled probability of broad exploitation in the near term - typical of niche consumer networking gear rather than mass-scanned enterprise targets. The CVE is NOT in CISA KEV, so there is no confirmed active exploitation. The vuln.today decision label is act_now, which elevates urgency. Two public references (a PDF writeup and an MP4 demonstration) exist on GitHub, so a public PoC reference exists, but it is not verified as working exploit code. Net assessment: the CVSS/SSVC-style act_now signal and PoC references justify prompt remediation, but the low EPSS and absence of KEV suggest this is targeted/opportunistic rather than widespread exploitation. Note a likely tension to verify with the vendor: CVSS asserts AV:N/PR:N, yet management of a Wi-Fi mesh extender's switch_status administrative function is typically reachable only from the LAN and often behind authentication - the sources do not describe the trigger, so the true access requirement should be confirmed.

Exploit ScenarioDerived

An attacker able to reach the EX8000's web management interface sends a crafted request to the switch_status function, injecting shell metacharacters into a parameter that is passed to a system command, resulting in arbitrary command execution on the device (typically as root on this class of hardware). A public PoC reference exists (GitHub PDF writeup plus an MP4 demonstration); it is not verified as working exploit code. Realistically this requires network/LAN reachability to the extender's management plane, consistent with the stated AV:N/AC:L.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 1.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 28, 2026

Command injection in the Netgear EX8000 Wi-Fi range extender running firmware 1.0.0.126 lets remote attackers pass unsanitized input through the switch_status function into a system command, potentially yielding arbitrary command execution with high confidentiality, integrity and availability impact (CVSS 9.8, AV:N/AC:L/PR:N/UI:N). The CVSS vector claims no privileges are required, though the available sources do not confirm the exact parameter, endpoint, or whether prior authentication is needed; in practice the affected administrative functionality is typically reachable only from the local or trusted network, which constrains real-world exposure. Exploitation is not confirmed in CISA KEV, but a public proof-of-concept reference exists (a detailed PDF and a demonstration video published by a third-party researcher); EPSS is 1.18% (67th percentile) and the vuln.today decision label is act_now, so signals are mixed but lean toward elevated priority.

RemediationAI

No vendor-released patch version is identified in the available sources, and no Netgear security advisory is linked - the only references are the researcher's PDF and demo video plus the VulDB entry - so confirm the current firmware status directly with Netgear support before assuming a fixed build exists. Until a fixed firmware is published, reduce exposure of the EX8000's administrative web interface: keep the device's management functions reachable only from a trusted local network rather than any routed or Internet-facing segment, and restrict which hosts on the LAN can reach the extender's admin address (trade-off: loses remote/convenient administration from untrusted segments and requires per-host firewall rules). Because the exploit path is an unsanitized input into the switch_status function, there is no confirmed input-filtering or feature-disable workaround in the supplied data, so network-level access restriction is the only actionable interim control; monitor the GitHub and VulDB references for a firmware fix announcement and apply it as soon as it is available.

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The EX8000 is a consumer AC3000 tri-band Wi-Fi mesh extender whose administrative and configuration functions are exposed through an embedded web/HTTP management interface on the device firmware. CVE-2025-50526 is a CWE-77 (Improper Neutralization of Special Elements used in a Command / command injection) flaw: input reaching the switch_status function is passed unsanitized into a system-level command, allowing an attacker who can interact with that function to inject shell metacharacters and execute arbitrary commands under the firmware's process privileges. The CPE cpe:2.3:o:netgear:ex8000_firmware:1.0.0.126 pins the affected scope to a single firmware build of this one extender model. The supplied sources do not describe the precise trigger - which parameter or HTTP endpoint is vulnerable, and whether any prior authentication or session state is required - so those mechanics remain unverified despite the PR:N rating in the CVSS vector; the CWE classification describes the root-cause class, not the trigger path.

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Severity by source

Vendor (mitre) PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 9.8 CRITICAL

Command injection to OS command execution gives full C/I/A loss; AV:N/AC:L/PR:N follow the described network-reachable function, though real PR is unverified since the trigger and auth requirement are not stated.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (mitre).

CVSS VectorVendor: mitre

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

Netgear EX8000 V1.0.0.126 was discovered to contain a command injection vulnerability via the switch_status function.

Executive ViewAI

Why It Matters

A critical command injection vulnerability in Netgear EX8000 Wi-Fi range extenders (firmware 1.0.0.126) could allow attackers to execute arbitrary commands, but practical exposure is limited because the affected administrative interface is typically only reachable from the local network. Only organizations using this specific model in untrusted network segments face direct risk; leadership should prioritize verification of device inventory and network placement.

Business Impact: Medium
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: restrict management access to trusted networks, disable remote administration, segment devices on isolated VLANs, and monitor for suspicious command execution.

Threat Intelligence Overview

EPSS Score
1.2%
Top 33% exploitable
Prevalence
Low
single consumer Wi-Fi mesh extender model, SOHO/home footprint, not enterprise
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 1.2%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Medium

Priority Score

50
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

Affected Products (CPE)CVE.org

cpe:2.3:o:netgear:ex8000_firmware:1.0.0.126:*:*:*:*:*:*:*
CVE-2025-45492 CRITICAL POC
9.8 May 06

Netgear EX8000 V1.0.0.126 is vulnerable to Command Injection via the Iface parameter in the action_wireless function. Ra

CVE-2021-45619 CRITICAL
9.8 Dec 26

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. Rated critical severity (CVSS

CVE-2021-45618 CRITICAL
9.8 Dec 26

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. Rated critical severity (CVSS

CVE-2021-38527 CRITICAL
9.8 Aug 11

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. Rated critical severity (CVSS

CVE-2020-35799 CRITICAL
9.8 Dec 30

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. Rated critical sev

CVE-2020-35800 CRITICAL
9.4 Dec 30

Certain NETGEAR devices are affected by incorrect configuration of security settings. Rated critical severity (CVSS 9.4)

CVE-2021-27253 HIGH
8.8 Apr 14

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Nigh

CVE-2021-27252 HIGH
8.8 Apr 14

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R780

CVE-2021-27251 HIGH
8.8 Apr 14

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Nigh

CVE-2021-27256 HIGH
8.8 Mar 05

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R780

CVE-2021-27255 HIGH
8.8 Mar 05

This vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR R7800 firmware

CVE-2021-27254 HIGH
8.8 Mar 05

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7800

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