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NVD / CVE Program· CNA mitre

CVE-2021-45642: Certain NETGEAR devices are affected by incorrect configuration of security settings.

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.97% (FIRST EPSS); higher than 61.9% of all records.
  • Anyone who can reach it over the internet can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects D7800 before 1.0.1.64, EX6250 before 1.0.0.134, EX7700 before 1.0.0.222, LBR20 before 2.6.3.50, RBS50Y before 2.7.3.22, R8900 before 1.0.5.26, R9000 before 1.0.5.26, XR450 before 2.3.2.66, XR500 before 2.3.2.66, XR700 before 1.0.1.36, EX7320 before 1.0.0.134, RAX120 before 1.2.2.24, EX7300v2 before 1.0.0.134, RAX120v2 before 1.2.2.24, EX6410 before 1.0.0.134, RBR10 before 2.7.3.22, RBR20 before 2.7.3.22, RBR40 before 2.7.3.22, RBR50 before 2.7.3.22, EX6420 before 1.0.0.134, RBS10 before 2.7.3.22, RBS20 before 2.7.3.22, RBS40 before 2.7.3.22, RBS50 before 2.7.3.22, EX6400v2 before 1.0.0.134, RBK12 before 2.7.3.22, RBK20 before 2.7.3.22, RBK40 before 2.7.3.22, and RBK50 before 2.7.3.22.

HighCVSS 7.2 · v3.1—No exploit No fix recorded
Published
Dec 25, 2021
Updated
Jun 17, 2026
EPSS
0.9% · 61th percentile
CWE
—

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.2 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.9%

CNA vs NVD score

NVD
7.2
CNA · mitre
7.5
0.3 point gap

CVSS:3.1/AC:L/AV:A/A:L/C:L/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.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-45642

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
netgeard7800 firmware
netgeard7800
netgearex6250 firmware
netgearex6250
netgearex7700 firmware
netgearex7700
netgearlbr20 firmware
netgearlbr20
netgearrbs50y firmware
netgearrbs50y
netgearrbs50 firmware
netgearrbs20 firmware

and 45 more

Affected versions

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

  • netgear d7800 firmwarebefore 1.0.1.64
  • netgear ex6250 firmwarebefore 1.0.0.134
  • netgear ex6400v2 firmwarebefore 1.0.0.134
  • netgear ex6410 firmwarebefore 1.0.0.134
  • netgear ex6420 firmwarebefore 1.0.0.134
  • netgear ex7300v2 firmwarebefore 1.0.0.134
  • netgear ex7320 firmwarebefore 1.0.0.134
  • netgear ex7700 firmwarebefore 1.0.0.222
  • netgear lbr20 firmwarebefore 2.6.3.50
  • netgear r8900 firmwarebefore 1.0.5.26
  • netgear r9000 firmwarebefore 1.0.5.26
  • netgear rax120 firmwarebefore 1.2.2.24
  • netgear rax120v2 firmwarebefore 1.2.2.24
  • netgear rbk12 firmwarebefore 2.7.3.22
  • netgear rbk20 firmwarebefore 2.7.3.22
  • netgear rbk40 firmwarebefore 2.7.3.22
  • netgear rbk50 firmwarebefore 2.7.3.22
  • netgear rbr10 firmwarebefore 2.7.3.22
  • netgear rbr20 firmwarebefore 2.7.3.22
  • netgear rbr40 firmwarebefore 2.7.3.22

Same product

netgear: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-45618Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.
    40Plan
  • CVE-2021-45608Certain D-Link, Edimax, NETGEAR, TP-Link, Tenda, and Western Digital devices are affected by an integer overflow by an unauthenticated attac
    40Plan
  • CVE-2021-45658Certain NETGEAR devices are affected by server-side injection.
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2021-45602Dec 25, 2021 · Certain NETGEAR devices are affected by command injection by an authenticated user.
    31Monitor
  • ← EarlierCVE-2021-45603Dec 25, 2021 · Certain NETGEAR devices are affected by disclosure of sensitive information.
    22Monitor
  • Later →CVE-2022-27641Mar 29, 2023 · This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.9
    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.

No history yet (it accumulates with the daily EPSS job).

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

  • Anyone who can reach it over the internet 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
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:N/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.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

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