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NVD / CVE Program· CNA mitre

CVE-2021-45512: Certain NETGEAR devices are affected by weak cryptography.

Noroxi assessment

Priority: Monitor (action score 39/100)

  • 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: 0.56% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is 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 weak cryptography. This affects D7000v2 before 1.0.0.62, D8500 before 1.0.3.50, EX3700 before 1.0.0.84, EX3800 before 1.0.0.84, EX6120 before 1.0.0.54, EX6130 before 1.0.0.36, EX7000 before 1.0.1.90, R6250 before 1.0.4.42, R6400v2 before 1.0.4.98, R6700v3 before 1.0.4.98, R6900P before 1.3.2.124, R7000 before 1.0.11.106, R7000P before 1.3.2.124, R7100LG before 1.0.0.56, R7900 before 1.0.4.26, R8000 before 1.0.4.58, R8300 before 1.0.2.134, R8500 before 1.0.2.134, RS400 before 1.5.0.48, WNR3500Lv2 before 1.2.0.62, and XR300 before 1.0.3.50.

CriticalCVSS 9.8 · v3.1—No exploit No fix recorded
Published
Dec 25, 2021
Updated
Jun 17, 2026
EPSS
0.5% · 47th percentile

Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CNA vs NVD score

NVD
9.8
CNA · mitre
8.6
1.2 point gap

CVSS:3.1/AC:L/AV:N/A:L/C:H/I:L/PR:N/S:U/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-2021-45512

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
netgeard7000 firmware
netgeard7000
netgeard8500 firmware
netgeard8500
netgearex3700 firmware
netgearex3700
netgearex3800 firmware
netgearex3800
netgearex6120 firmware
netgearex6120
netgearex6130 firmware
netgearex6130

and 30 more

Check your site's encryption

This vulnerability is about certificate validation or weak cryptography. The free SSL checker tests your certificate, enabled TLS versions and weak ciphers.

Run the SSL check

Affected versions

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

  • netgear d7000 firmwarebefore 1.0.0.62
  • netgear d8500 firmwarebefore 1.0.3.50
  • netgear ex3700 firmwarebefore 1.0.0.84
  • netgear ex3800 firmwarebefore 1.0.0.84
  • netgear ex6120 firmwarebefore 1.0.0.54
  • netgear ex6130 firmwarebefore 1.0.0.36
  • netgear ex7000 firmwarebefore 1.0.1.90
  • netgear r6250 firmwarebefore 1.0.4.42
  • netgear r6400 firmwarebefore 1.0.4.98
  • netgear r6700 firmwarebefore 1.0.4.98
  • netgear r6900p firmwarebefore 1.3.2.124
  • netgear r7000 firmwarebefore 1.0.11.106
  • netgear r7000p firmwarebefore 1.3.2.124
  • netgear r7100lg firmwarebefore 1.0.0.56
  • netgear r7900 firmwarebefore 1.0.4.26
  • netgear r8000 firmwarebefore 1.0.4.58
  • netgear r8300 firmwarebefore 1.0.2.134
  • netgear r8500 firmwarebefore 1.0.2.134
  • netgear rs400 firmwarebefore 1.5.0.48
  • netgear wnr3500l firmwarebefore 1.2.0.62

Same product

netgear: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-45497NETGEAR D7000 devices before 1.0.1.82 are affected by authentication bypass.
    40Plan
  • CVE-2021-45496NETGEAR D7000 devices before 1.0.1.82 are affected by authentication bypass.
    40Plan
  • CVE-2021-45495NETGEAR D7000 devices before 1.0.1.68 are affected by authentication bypass.
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2018-21168Apr 27, 2020 · Certain NETGEAR devices are affected by disclosure of sensitive information.
    30Monitor
  • ← EarlierCVE-2018-21169Apr 27, 2020 · Certain NETGEAR devices are affected by incorrect configuration of security settings.
    35Monitor
  • Later →CVE-2021-45636Dec 25, 2021 · NETGEAR D7000 devices before 1.0.1.82 are affected by a stack-based buffer overflow by an unauthenticated attacker.
    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.
  • No account or password is 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
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-327 · Use of a Broken or Risky Cryptographic Algorithm

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/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.

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