CVE-2026-7546
Critical
Description
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductTotolink Nr1800x Firmware
PublishedMay 1, 2026
First seenMay 1, 2026
Weakness typeCWE-121CWE-121CWE-119Memory buffer bounds error
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| totolink nr1800x_firmware | 9.1.0u.6279_B20210910 | — |
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