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Vulnerability record · CVE-2020-35229 · published 10 March 2021

CVE-2020-35229: Netgear gs116e firmware vulnerability

Netgear · Gs116e Firmware

The authentication token required to execute NSDP write requests on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 devices is not properly invalidated and can be reused until a new token is generated, which allows attackers (with access to network traffic) to effectively gain administrative privileges.

8.8 CVSS 3.1 High EPSS 0.75% · top 46.9% CWE-384 · CWE-384
8.8CVSS 3.1 base score, v2 5.8
0.75%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

The authentication token required to execute NSDP write requests on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 devices is not properly invalidated and can be reused until a new token is generated, which allows attackers (with access to network traffic) to effectively gain administrative privileges.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
https://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs Vendor Advisory
https://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs Vendor Advisory

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Related vulnerabilities

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

9.8CVE-2020-26919NETGEAR JGS516PE switch missing function-level access controlNETGEAR JGS516PE devices before firmware 2.6.0.43 lack access control at the function level, allowing protected management functions to be invoked wi…KEVEPSS 57%analysed8.8CVE-2020-35231Netgear gs116e firmware improper authentication vulnerabilityThe NSDP protocol implementation on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 devices was affected by an authentication issue that allows an attacker to by…EPSS 1.1%8.8CVE-2020-35223Netgear gs116e firmware cross-site request forgery vulnerabilityThe CSRF protection mechanism implemented in the web administration panel on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 devices could be bypassed by omittin…EPSS 0.59%8.8CVE-2020-35221Netgear gs116e firmware inadequate encryption strength vulnerabilityThe hashing algorithm implemented for NSDP password authentication on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 devices was found to be insecure, allowing …EPSS 0.47%8.1CVE-2020-35782Netgear jgs516pe firmware vulnerabilityCertain NETGEAR devices are affected by lack of access control at the function level. This affects JGS516PE before 2.6.0.48, JGS524Ev2 before 2.6.0.4…EPSS 1.7%7.3CVE-2020-35801Netgear jgs516pe firmware vulnerabilityCertain NETGEAR devices are affected by incorrect configuration of security settings. This affects JGS516PE before 2.6.0.48, JGS524Ev2 before 2.6.0.4…EPSS 1.7%7.2CVE-2020-35227Netgear gs116e firmware classic buffer overflow vulnerabilityA buffer overflow vulnerability in the access control section on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 devices (in the administration web panel) allows…EPSS 1.1%7.2CVE-2020-35784Netgear jgs516pe firmware vulnerabilityCertain NETGEAR devices are affected by lack of access control at the function level. This affects JGS516PE before 2.6.0.48, JGS524PE before 2.6.0.48…EPSS 0.85%

Source: NIST National Vulnerability Database (record CVE-2020-35229), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.