CVE-2021-35973
CVSS v3
9.8
CRITICAL
EPSS Score
1.5 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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 ¤tsetting.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).
Technical details
- Published
- 2021-06-30
Frequently asked questions
What is CVE-2021-35973?
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 ¤tsetting.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).
Is CVE-2021-35973 actively exploited?
Active exploitation of CVE-2021-35973 has not been confirmed. The EPSS score is 1.5%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-35973?
CVE-2021-35973 has a CVSS v3 base score of 9.8 (CRITICAL severity).
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