CVE-2026-7546

CRITICAL

Totolink NR1800X lighttpd find_host_ip stack-based overflow

Title source: cna

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.

References (5)

[Vdb Entry, Technical Description] https://vuldb.com/vuln/360357

[Signature, Permissions Required] https://vuldb.com/vuln/360357/cti

[Third Party Advisory] https://vuldb.com/submit/804404

[Exploit] https://github.com/newym/cve/blob/main/totolinknr1800x.md

View Exploit ZIP pw:eip

[Product] https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.0008

EPSS Percentile 22.7%

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:W/RC:R

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact total

Details

CWE

CWE-119 CWE-121

Status published

Products (1)

Totolink/NR1800X 9.1.0u.6279_B20210910

Published May 01, 2026

Tracked Since May 01, 2026