HOMEVULNERABILITIESCVE-2020-35231
HIGH

CVE-2020-35231

CWE-287Published: March 10, 2021· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

The NSDP protocol implementation on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 devices was affected by an authentication issue that allows an attacker to bypass access controls and obtain full control of the device.

NVD Source

Technical Analysis

CVE-2020-35231 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

netgear4 product(s)
gs116e firmwaregs116ejgs516pe firmwarejgs516pe
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs116ev2-switches/
ADVISORYhttps://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs116ev2-switches/

All References (2)

→
https://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs116ev2-switches/Vendor Advisory
→
https://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs116ev2-switches/Vendor Advisory

Quick Facts

CVE IDCVE-2020-35231
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-287
CISA KEVNo
Affected1 vendor(s)
PublishedMar 10, 2021

Related CVEs (CWE-287)

CVE-2026-23600
10.0
CVE-2026-41679
10.0
CVE-2026-42869
10.0
CVE-2026-30836
10.0
CVE-2026-42822
10.0
CVE-2026-41070
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-35231 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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