CVE-2021-35973

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

NETGEAR WAC104 devices before 1.0.4.15 are affected by an authentication bypass vulnerability in /usr/sbin/mini_httpd, allowing an unauthenticated attacker to invoke any action by adding the &currentsetting.htm substring to the HTTP query, a related issue to CVE-2020-27866. This directly allows the attacker to change the web UI password, and eventually to enable debug mode (telnetd) and gain a shell on the device as the admin limited-user account (however, escalation to root is simple because of weak permissions on the /etc/ directory).

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-697

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://gynvael.coldwind.pl/?lang=en&id=736Exploit, Third Party Advisory
https://kb.netgear.com/000063785/Security-Advisory-for-Authentication-Bypass-on-WAC104-PSV-2021-0075Vendor Advisory
https://gynvael.coldwind.pl/?lang=en&id=736Exploit, Third Party Advisory
https://kb.netgear.com/000063785/Security-Advisory-for-Authentication-Bypass-on-WAC104-PSV-2021-0075Vendor Advisory

Timeline

Published: Jun 30, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

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