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NVD / CVE Program· CNA mitre

CVE-2020-28373: upnpd on certain NETGEAR devices allows remote (LAN) attackers to execute arbitrary code via a stack-based buffer overflow.

HighCVSS 8.8 · v3.1—No exploit No fix recorded

Noroxi assessment

Priority: Monitor (action score 35/100)

  • 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: 1% (FIRST EPSS); higher than 64.4% of all records.
  • Someone on the same network segment 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

upnpd on certain NETGEAR devices allows remote (LAN) attackers to execute arbitrary code via a stack-based buffer overflow. This affects R6400v2 V1.0.4.102_10.0.75, R6400 V1.0.1.62_1.0.41, R7000P V1.3.2.126_10.1.66, XR300 V1.0.3.50_10.3.36, R8000 V1.0.4.62, R8300 V1.0.2.136, R8500 V1.0.2.136, R7300DST V1.0.0.74, R7850 V1.0.5.64, R7900 V1.0.4.30, RAX20 V1.0.2.64, RAX80 V1.0.3.102, and R6250 V1.0.4.44.

Published
Nov 9, 2020
Updated
Jun 16, 2026
EPSS
1.0% · 64th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.0%

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-2020-28373

When you'll hear from us

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  • 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
netgearr6400v2 firmware
netgearr6400v2
netgearr6400 firmware
netgearr6400
netgearr7000p firmware
netgearr7000p
netgearxr300 firmware
netgearxr300
netgearr8000 firmware
netgearr8000
netgearr8300 firmware
netgearr8300

and 14 more

Affected versions

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

  • netgear r6250 firmware1.0.4.44
  • netgear r6400 firmware1.0.1.62_1.0.41
  • netgear r6400v2 firmware1.0.4.102_10.0.75
  • netgear r7000p firmware1.3.2.126_10.1.66
  • netgear r7300dst firmware1.0.0.74
  • netgear r7850 firmware1.0.5.64
  • netgear r7900 firmware1.0.4.30
  • netgear r8000 firmware1.0.4.62
+5 more rows
  • netgear r8300 firmware1.0.2.136
  • netgear r8500 firmware1.0.2.136
  • netgear rax20 firmware1.0.2.64
  • netgear rax80 firmware1.0.3.102
  • netgear xr300 firmware1.0.3.50_10.3.36

Same product

netgear: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-45607Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user.
    35Monitor
  • CVE-2021-40847The update process of the Circle Parental Control Service on various NETGEAR routers allows remote attackers to achieve remote code…
    35Monitor
  • CVE-2020-35798Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.
    31Monitor

Published before and after this one in the same product

  • Later →CVE-2021-45643Dec 25, 2021 · Certain NETGEAR devices are affected by incorrect configuration of security settings.
    26Monitor
  • Later →CVE-2021-45649Dec 25, 2021 · Certain NETGEAR devices are affected by disclosure of sensitive information.
    22Monitor

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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone on the same network segment 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
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:A/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.

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

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