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CVE-2021-45554· NVD / CVE Program· CNA mitre

Certain NETGEAR devices are affected by command injection by an authenticated user.

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects R6400 before 1.0.1.74, R6400v2 before 1.0.4.118, R6700v3 before 1.0.4.118, R7000 before 1.0.11.126, R6900P before 1.3.3.140, R7000P before 1.3.3.140, and R8000 before 1.0.4.74.

MediumCVSS 6.8 · v3.1—No exploit No fix recorded
Published
Dec 25, 2021
Updated
Jun 17, 2026
EPSS
0.6% · 48th percentile
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Action score

27

Monitor

Low priority for now.

CVSS
27 / 40 · 6.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

CNA vs NVD score

NVD
6.8
CNA · mitre
8.4
1.6 point gap

CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:C/UI:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

VendorProduct
netgearr6400 firmware
netgearr6400
netgearr6400v2 firmware
netgearr6400v2
netgearr6700v3 firmware
netgearr6700v3
netgearr7000 firmware
netgearr7000
netgearr6900p firmware
netgearr6900p
netgearr7000p firmware
netgearr7000p

and 2 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • netgear r6400 firmwarebefore 1.0.1.74
  • netgear r6400v2 firmwarebefore 1.0.4.118
  • netgear r6700v3 firmwarebefore 1.0.4.118
  • netgear r6900p firmwarebefore 1.3.3.140
  • netgear r7000 firmwarebefore 1.0.11.126
  • netgear r7000p firmwarebefore 1.3.3.140
  • netgear r8000 firmwarebefore 1.0.4.74

Same product

netgear: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-27643This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.9
    43Plan
  • CVE-2020-11789Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.
    40Plan
  • CVE-2022-27646This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.9
    35Monitor
  • CVE-2022-27644This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETG
    35Monitor
  • CVE-2021-45606Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user.
    35Monitor
  • CVE-2021-45605Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user.
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone on the same network segment can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Adjacent
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records