CVE-2018-21142
Description
Certain NETGEAR devices are affected by denial of service. This affects R6100 before 1.0.1.22, R7500 before 1.0.0.122, R7800 before 1.0.2.42, R8900 before 1.0.3.10, R9000 before 1.0.3.10, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.54, WNDR4500v3 before 1.0.0.54, and WNR2000v5 before 1.0.0.64.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
NETGEAR routers are vulnerable to denial of service; fixed firmware versions listed.
Vulnerability
Certain NETGEAR routers (R6100, R7500, R7800, R8900, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, WNDR4500v3, WNR2000v5) running firmware versions prior to specified fixed releases are susceptible to a denial of service (DoS) vulnerability [1]. The specific nature of the vulnerability is not publicly detailed.
Exploitation
According to the advisory [1], an attacker can exploit this vulnerability to cause a denial of service. The exact prerequisites and attack vector (e.g., network proximity, authentication requirement) are not disclosed in the available references. However, it is typical for such router vulnerabilities to be exploitable from the local network without authentication.
Impact
Successful exploitation leads to a denial of service, rendering the device unavailable. This can disrupt network connectivity for all connected clients.
Mitigation
NETGEAR has released firmware updates to address this vulnerability: R6100 version 1.0.1.22, R7500 version 1.0.0.122, R7800 version 1.0.2.42, R8900 version 1.0.3.10, R9000 version 1.0.3.10, WNDR3700v4 version 1.0.2.96, WNDR4300 version 1.0.2.98, WNDR4300v2 version 1.0.0.54, WNDR4500v3 version 1.0.0.54, WNR2000v5 version 1.0.0.64 [1]. Users should upgrade to these versions or later. No workarounds are provided.
AI Insight generated on May 26, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
4- NETGEAR/NETGEAR devicesdescription
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1- kb.netgear.com/000059491/Security-Advisory-for-Denial-of-Service-on-Some-Routers-PSV-2017-3169mitrex_refsource_CONFIRM
News mentions
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