HOMEVULNERABILITIESCVE-2020-35782
HIGH

CVE-2020-35782

NVD-CWE-OtherPublished: December 30, 2020· Updated: Jun 17, 2026

8.1
CVSS v3.1

Official Description

Certain NETGEAR devices are affected by lack of access control at the function level. This affects JGS516PE before 2.6.0.48, JGS524Ev2 before 2.6.0.48, JGS524PE before 2.6.0.48, and GS116Ev2 before 2.6.0.48. The TFTP firmware update mechanism does not properly implement firmware validations, allowing remote attackers to write arbitrary data to internal memory.

NVD Source

Technical Analysis

CVE-2020-35782 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 full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

netgear8 product(s)
jgs516pe firmwarejgs516pejgs524e firmwarejgs524ejgs524pe firmwarejgs524pegs116e firmwaregs116e
Source: NVD CPE · 8 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://kb.netgear.com/000062636/Security-Advisory-for-Missing-Function-Level-Access-Control-on-Some-Smart-Managed-Plus-Switches-PSV-2020-0378
ADVISORYhttps://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs116ev2-switches/
ADVISORYhttps://kb.netgear.com/000062636/Security-Advisory-for-Missing-Function-Level-Access-Control-on-Some-Smart-Managed-Plus-Switches-PSV-2020-0378
ADVISORYhttps://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs116ev2-switches/

All References (4)

→
https://kb.netgear.com/000062636/Security-Advisory-for-Missing-Function-Level-Access-Control-on-Some-Smart-Managed-Plus-Switches-PSV-2020-0378Vendor Advisory
→
https://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs116ev2-switches/Exploit · Third Party Advisory
→
https://kb.netgear.com/000062636/Security-Advisory-for-Missing-Function-Level-Access-Control-on-Some-Smart-Managed-Plus-Switches-PSV-2020-0378Vendor Advisory
→
https://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs116ev2-switches/Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2020-35782
CVSS Score8.1 / 10
SeverityHIGH
WeaknessNVD-CWE-Other
CISA KEVNo
Affected1 vendor(s)
PublishedDec 30, 2020

Related CVEs (NVD-CWE-Other)

CVE-2002-1468
10.0
CVE-2002-0747
10.0
CVE-2001-1080
10.0
CVE-2007-1015
10.0
CVE-1999-1405
10.0
CVE-2006-6859
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-35782 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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