HOMEVULNERABILITIESCVE-2021-45552
HIGH

CVE-2021-45552

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

7.2
CVSS v3.1

Official Description

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects D7800 before 1.0.1.58, R7500v2 before 1.0.3.48, R7800 before 1.0.2.68, R8900 before 1.0.5.2, R9000 before 1.0.5.2, RAX120 before 1.0.1.108, and XR700 before 1.0.1.20.

NVD Source

Technical Analysis

CVE-2021-45552 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

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 7.2.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

netgear14 product(s)
d7800 firmwared7800r7500v2 firmwarer7500v2r7800 firmwarer7800r8900 firmwarer8900r9000 firmwarer9000rax120 firmwarerax120+2
Source: NVD CPE · 14 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/000064071/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-PSV-2019-0199
PATCHhttps://kb.netgear.com/000064071/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-PSV-2019-0199

All References (2)

→
https://kb.netgear.com/000064071/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-PSV-2019-0199Patch · Vendor Advisory
→
https://kb.netgear.com/000064071/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-PSV-2019-0199Patch · Vendor Advisory

Quick Facts

CVE IDCVE-2021-45552
CVSS Score7.2 / 10
SeverityHIGH
WeaknessCWE-77
CISA KEVNo
Affected1 vendor(s)
PublishedDec 26, 2021

Related CVEs (CWE-77)

CVE-2024-48841
10.0
CVE-2025-61492
10.0
CVE-2024-28354
10.0
CVE-2015-1815
10.0
CVE-2014-1905
10.0
CVE-2013-2810
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-45552 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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