HOMEVULNERABILITIESCVE-2021-45610
CRITICAL

CVE-2021-45610

CWE-120Published: December 26, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D6220 before 1.0.0.66, D6400 before 1.0.0.100, D7000v2 before 1.0.0.66, D8500 before 1.0.3.58, DC112A before 1.0.0.52, DGN2200v4 before 1.0.0.118, EAX80 before 1.0.1.64, R6250 before 1.0.4.48, R7000 before 1.0.11.110, R7100LG before 1.0.0.72, R7900 before 1.0.4.30, R7960P before 1.4.1.64, R8000 before 1.0.4.62, RAX200 before 1.0.3.106, RS400 before 1.5.1.80, XR300 before 1.0.3.68, R6400v2 before 1.0.4.106, R7000P before 1.3.2.132, R8000P before 1.4.1.64, RAX20 before 1.0.2.82, RAX45 before 1.0.2.82, RAX80 before 1.0.3.106, R6700v3 before 1.0.4.106, R6900P before 1.3.2.132, R7900P before 1.4.1.64, RAX15 before 1.0.2.82, RAX50 before 1.0.2.82, and RAX75 before 1.0.3.106.

NVD Source

Technical Analysis

CVE-2021-45610 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

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 9.8.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

netgear56 product(s)
d6220 firmwared6220d6400 firmwared6400d7000v2 firmwared7000v2d8500 firmwared8500dc112a firmwaredc112adgn2200v4 firmwaredgn2200v4+44
Source: NVD CPE · 56 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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Official Patches & Advisories

All References (2)

Quick Facts

CVE IDCVE-2021-45610
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedDec 26, 2021

Related CVEs (CWE-120)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2021-45610 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.