CVE-2026-7546
CriticalCVSS 9.8Exploitation Probability (EPSS)
Elevated risk55th percentile - higher than 55% of all known CVEs
Summary
A security vulnerability has been detected in Totolink NR1800X version 9.1.0u.6279_B20210910 in the function find_host_ip of the lighttpd component. Manipulation of the Host argument leads to stack-based buffer overflow.
Risk Assessment
An attacker can remotely exploit this vulnerability, posing a serious threat to system security. The public disclosure of the exploit increases the risk of attacks.
Recommendation
It is recommended to update the device to the latest firmware version to eliminate this vulnerability. Additionally, monitor systems for unauthorized access attempts.
Other vulnerabilities in lighttpd
See all- CVE-2026-15701Critical
A vulnerability has been found in Totolink NR1800X firmware version 9.1.0u.6279_B20210910 in the Form_Logout function of the /formLogout.htm file within the lighttpd component. Manipulation of the Host argument causes a stack-based buffer overflow, which can be exploited remotely.
- CVE-2025-12642Critical
lighttpd 1.4.80 incorrectly merges trailer fields into headers after HTTP request parsing. This behavior can be exploited to conduct HTTP Header Smuggling attacks. Successful exploitation may allow an attacker to bypass access control rules, inject unsafe input into backend logic that trusts request headers, and execute HTTP Request Smuggling attacks under some conditions.
- CVE-2014-2323Critical
SQL injection vulnerability in mod_mysql_vhost.c in lighttpd before 1.4.35 allows remote attackers to execute arbitrary SQL commands via the host name, related to request_check_hostname.
Original NVD description (English source)
A security vulnerability has been detected in Totolink NR1800X 9.1.0u.6279_B20210910. The impacted element is the function find_host_ip of the component lighttpd. Such manipulation of the argument Host leads to stack-based buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS