CVE-2025-4146Network attack vector

Memory corruption via oversized host value

Published May 1, 2025 · Updated May 1, 2025

Buffer overflow in NETGEAR EX6200 firmware 1.0.3.94 allows remote authenticated users to corrupt memory via a crafted host value. Function sub_41940 processes the host argument without enforcing the destination buffer's bounds, allowing the value to overrun adjacent memory. Low-privileged access is required, and no user interaction is needed; exact post-overflow behavior beyond memory corruption is undisclosed.

CVSS severity9.8
Critical
EPSS probability1.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in NETGEAR EX6200 firmware 1.0.3.94 allows remote authenticated users to corrupt memory via a crafted host value. Function sub_41940 processes the host argument without enforcing the destination buffer's bounds, allowing the value to overrun adjacent memory. Low-privileged access is required, and no user interaction is needed; exact post-overflow behavior beyond memory corruption is undisclosed.

The record

CVE
CVE-2025-4146
Published
May 1, 2025
Updated
May 1, 2025
Vendor
NETGEAR
Product
AC1200 Dual Band WiFi Range Extender (EX6200)
Classifications
CWE-119, CWE-120, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2025CVE publishedPublication date reported by the CVE source.
  2. May 1, 2025Record 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=1.0.3.94

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NETGEAR · AC1200 Dual Band WiFi Range Extender (EX6200)version=1.0.3.94

Published CVSS scores

8.7VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDB CNAAV:N/AC:L/Au:S/C:C/I:C/A:C
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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