CVE-2019-20736

Authenticated service interruption via stack overflow

Published Apr 16, 2020 · Updated Aug 5, 2024

A stack-based buffer overflow in NETGEAR D6000 and related router firmware allows remote authenticated users to disrupt service via crafted administration requests. NETGEAR does not publish the vulnerable function or request parameter; the record identifies a stack buffer overwrite in authenticated management handling. Exploitation requires valid administrative access to the router interface, and the documented consequence is corruption of process memory with possible service interruption; code execution is not established by the public record.

CVSS severity6.8
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A stack-based buffer overflow in NETGEAR D6000 and related router firmware allows remote authenticated users to disrupt service via crafted administration requests. NETGEAR does not publish the vulnerable function or request parameter; the record identifies a stack buffer overwrite in authenticated management handling. Exploitation requires valid administrative access to the router interface, and the documented consequence is corruption of process memory with possible service interruption; code execution is not established by the public record.

The record

CVE
CVE-2019-20736
Published
Apr 16, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1210
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 16, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NVDCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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