CVE-2025-7407VulnerabilityPublished 10 Jul 2025

CVE-2025-7407: Netgear D6400 · OS Command Injection

Affects Netgear D6400Source CVE Database V5

Not known to be exploited · 12% EPSS · CVSS 5.3 Medium · end of life, no fix coming : replace or isolate Netgear D6400; no fix will be released.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 4.0 base score

5.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 12.1% chance of exploitation in 30 days – higher than 96% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: None coming – the product is end of life

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: Low
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

No fix will be released: Netgear D6400 is end of life. Replace it, or isolate it from untrusted networks until you can.

Affected software

Product	Affected	Fixed in
GitHubnetgear/D6400`pkg:github/netgear/D6400`Other threats	Affected =1.0.0.114	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Since the Netgear D6400 is no longer supported and no patches are available, organizations should prioritize replacing affected devices with currently supported hardware that receives regular security updates. In the interim, network administrators should isolate these routers from critical network segments and restrict remote management access, ideally disabling remote administration entirely. Implementing network-level controls such as firewall rules to block external access to the router’s management interfaces can reduce exposure. Monitoring network traffic for unusual activity originating from these devices can help detect exploitation attempts. Employing network segmentation and strict access controls will limit the potential impact if a device is compromised. Finally, organizations should maintain an inventory of all network devices to identify and remediate unsupported hardware promptly.

Description

A vulnerability, which was classified as critical, was found in Netgear D6400 1.0.0.114. This affects an unknown part of the file diag.cgi. The manipulation of the argument host_name leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early and confirmed the existence of the vulnerability. They reacted very quickly, professional and kind. This vulnerability only affects products that are no longer supported by the maintainer.

Impact

For European organizations using the Netgear D6400 router, this vulnerability poses a tangible risk. Exploitation could lead to unauthorized control over network infrastructure, enabling attackers to intercept sensitive communications, disrupt network availability, or launch attacks against internal systems. Given that the device is no longer supported, organizations cannot rely on vendor patches, increasing exposure. This is particularly concerning for small and medium enterprises or home office setups that may still use legacy equipment. The impact extends to potential regulatory compliance issues under GDPR if personal data confidentiality is compromised. Additionally, compromised routers could be leveraged in botnets or for lateral movement, amplifying the threat landscape within European networks.

Summary

CVE-2025-7407 is a security vulnerability identified in the Netgear D6400 router, specifically in firmware version 1.0.0.114. The vulnerability resides in the diag.cgi component, where improper validation of the 'host_name' argument allows for OS command injection. This means that an attacker can remotely craft malicious input to execute arbitrary operating system commands on the affected device without requiring authentication or user interaction. The vulnerability is classified as medium severity with a CVSS 4.0 base score of 5.3, reflecting its remote exploitability and potential impact on confidentiality, integrity, and availability, albeit with some limitations. The vendor has acknowledged the issue promptly but the affected product is no longer supported, and no official patches are available. Although no known exploits are currently observed in the wild, public disclosure of the exploit code increases the risk of exploitation. The vulnerability could allow attackers to gain control over the device, potentially leading to network compromise, data interception, or use of the router as a pivot point for further attacks within the network.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 10 Jul 2025, 14:01 UTC

Technical details

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