HOMEVULNERABILITIESCVE-2021-45602
HIGH

CVE-2021-45602

CWE-78Published: December 26, 2021· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects D7800 before 1.0.1.66, EX2700 before 1.0.1.68, WN3000RPv2 before 1.0.0.90, WN3000RPv3 before 1.0.2.100, LBR1020 before 2.6.5.20, LBR20 before 2.6.5.32, R6700AX before 1.0.10.110, R7800 before 1.0.2.86, R8900 before 1.0.5.38, R9000 before 1.0.5.38, RAX10 before 1.0.10.110, RAX120v1 before 1.2.3.28, RAX120v2 before 1.2.3.28, RAX70 before 1.0.10.110, RAX78 before 1.0.10.110, XR450 before 2.3.2.130, XR500 before 2.3.2.130, and XR700 before 1.0.1.46.

NVD Source

Technical Analysis

CVE-2021-45602 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low 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 7.8.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

netgear36 product(s)
d7800 firmwared7800ex2700 firmwareex2700wn3000rpv2 firmwarewn3000rpv2wn3000rpv3 firmwarewn3000rpv3lbr1020 firmwarelbr1020lbr20 firmwarelbr20+24
Source: NVD CPE · 36 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

PATCHhttps://kb.netgear.com/000064407/Security-Advisory-for-Post-Authentication-Command-Injection-Sensitive-Information-Disclosure-on-Multiple-Products-PSV-2021-0169-PSV-2021-0171
PATCHhttps://kb.netgear.com/000064407/Security-Advisory-for-Post-Authentication-Command-Injection-Sensitive-Information-Disclosure-on-Multiple-Products-PSV-2021-0169-PSV-2021-0171
ADVISORYhttps://immersivelabs.com/resources/blog/netgear-vulnerabilities-could-put-small-business-routers-at-risk/
ADVISORYhttps://immersivelabs.com/resources/blog/netgear-vulnerabilities-could-put-small-business-routers-at-risk/

All References (4)

→
https://immersivelabs.com/resources/blog/netgear-vulnerabilities-could-put-small-business-routers-at-risk/Third Party Advisory
→
https://kb.netgear.com/000064407/Security-Advisory-for-Post-Authentication-Command-Injection-Sensitive-Information-Disclosure-on-Multiple-Products-PSV-2021-0169-PSV-2021-0171Patch · Vendor Advisory
→
https://immersivelabs.com/resources/blog/netgear-vulnerabilities-could-put-small-business-routers-at-risk/Third Party Advisory
→
https://kb.netgear.com/000064407/Security-Advisory-for-Post-Authentication-Command-Injection-Sensitive-Information-Disclosure-on-Multiple-Products-PSV-2021-0169-PSV-2021-0171Patch · Vendor Advisory

Quick Facts

CVE IDCVE-2021-45602
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-78
CISA KEVNo
Affected1 vendor(s)
PublishedDec 26, 2021

Related CVEs (CWE-78)

CVE-2020-26301
10.0
CVE-2019-4202
10.0
CVE-2025-64127
10.0
CVE-2026-6349
10.0
CVE-2018-25118
10.0
CVE-2016-10043
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-45602 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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