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Vulnerability record · CVE-2025-4142 · published 30 April 2025

CVE-2025-4142: Netgear ex6200 firmware memory buffer overflow vulnerability

Netgear · Ex6200 Firmware

A vulnerability has been found in Netgear EX6200 1.0.3.94 and classified as critical. This vulnerability affects the function sub_3C8EC. The manipulation of the argument host leads to buffer overflow. The attack can be initiated remotely. The vendor was contacted early about this disclosure but did not respond in any way.

8.7 CVSS 4.0 High EPSS 1.2% · top 32.8% CWE-119 · Memory buffer overflowCWE-120 · Classic buffer overflow
8.7CVSS 4.0 base score, v2 9.0
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

A vulnerability has been found in Netgear EX6200 1.0.3.94 and classified as critical. This vulnerability affects the function sub_3C8EC. The manipulation of the argument host leads to buffer overflow. The attack can be initiated remotely. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/jylsec/vuldb/blob/main/Netgear/netgear_ex6200/Buffer_overflow-sub_3C8EC-gui_Wireless_Security_state/R Exploit
https://vuldb.com/?ctiid.306634 Permissions RequiredVDB Entry
https://vuldb.com/?id.306634 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.560790 Third Party AdvisoryVDB Entry
https://www.netgear.com/ Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-35796Netgear cbr40 firmware classic buffer overflow vulnerabilityCertain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects CBR40 before 2.5.0.10, D6220 before 1.0.0.60, …EPSS 1.3%9.8CVE-2018-21153Netgear d7800 firmware classic buffer overflow vulnerabilityCertain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D7800 before 1.0.1.34, DM200 before 1.0.0.50, …EPSS 1.6%9.8CVE-2018-21162Netgear d6400 firmware os command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects D6400 before 1.0.0.78, EX6200 before 1.0.3.86,…EPSS 3.4%9.8CVE-2018-21134Netgear r6700 firmware out-of-bounds write vulnerabilityCertain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects R6700 before 1.0.1.48, R7900 befor…EPSS 1.3%8.8CVE-2021-34947Netgear d7800 firmware out-of-bounds write vulnerabilityNETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitr…EPSS 0.55%8.8CVE-2023-38926Netgear ex6200 firmware classic buffer overflow vulnerabilityNetgear EX6200 v1.0.3.94 was discovered to contain a buffer overflow via the wla_temp_ssid parameter at acosNvramConfig_set.EPSS 0.96%8.8CVE-2023-38925Netgear dc112a firmware classic buffer overflow vulnerabilityNetgear DC112A 1.0.0.64, EX6200 1.0.3.94 and R6300v2 1.0.4.8 were discovered to contain a buffer overflow via the http_passwd parameter in password.c…EPSS 15%8.8CVE-2022-27641Netgear d7800 firmware integer overflow vulnerabilityThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers…EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2025-4142), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.