HOMEVULNERABILITIESCVE-2021-45533
MEDIUM

CVE-2021-45533

CWE-77Published: December 26, 2021· Updated: Jun 17, 2026

6.8
CVSS v3.1

Official Description

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects EX6120 before 1.0.0.66, EX6130 before 1.0.0.46, EX7000 before 1.0.1.106, EX7500 before 1.0.1.76, EX3700 before 1.0.0.94, EX3800 before 1.0.0.94, RBR850 before 4.6.3.9, RBS850 before 4.6.3.9, and RBK852 before 4.6.3.9.

NVD Source

Technical Analysis

CVE-2021-45533 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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 6.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

netgear18 product(s)
ex6120 firmwareex6120ex6130 firmwareex6130ex7000 firmwareex7000ex7500 firmwareex7500ex3700 firmwareex3700ex3800 firmwareex3800+6
Source: NVD CPE · 18 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/000064458/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Extenders-and-WiFi-Systems-PSV-2020-0062
ADVISORYhttps://kb.netgear.com/000064458/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Extenders-and-WiFi-Systems-PSV-2020-0062

All References (2)

→
https://kb.netgear.com/000064458/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Extenders-and-WiFi-Systems-PSV-2020-0062Vendor Advisory
→
https://kb.netgear.com/000064458/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Extenders-and-WiFi-Systems-PSV-2020-0062Vendor Advisory

Quick Facts

CVE IDCVE-2021-45533
CVSS Score6.8 / 10
SeverityMEDIUM
WeaknessCWE-77
CISA KEVNo
Affected1 vendor(s)
PublishedDec 26, 2021

Related CVEs (CWE-77)

CVE-2015-6912
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CVE-2014-9682
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CVE-2024-28354
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CVE-2024-32766
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CVE-2025-61492
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CVE-2015-3408
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Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-45533 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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