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CVE-2020-15416

HighPublished

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers....

Published: Jul 28, 2020
Updated: Aug 4, 2024
Assigning CNA: zdi
Evidence observed: Aug 8, 2026

Primary CVSS

8.8/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

6.4%

Low · next 30 days

Percentile: 93.5%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length, stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-9703.

Sources

R7000_httpd_BOF_CVE-2020-15416Exploit
Walkthrough of CVE-2020-15416 buffer overflow exploit for Netgear R7000 router, including QEMU user-mode debugging environment setup and detailed vulnerability analysis.

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