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Vulnerability record · CVE-2026-7546 · published 1 May 2026

CVE-2026-7546: Memory buffer overflow vulnerability

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.

8.9 CVSS 4.0 High EPSS 1.0% · top 38.0% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow Deferred
8.9CVSS 4.0 base score, v2 10.0
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/newym/cve/blob/main/totolinknr1800x.md
https://vuldb.com/submit/804404
https://vuldb.com/vuln/360357
https://vuldb.com/vuln/360357/cti
https://www.totolink.net/

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Source: NIST National Vulnerability Database (record CVE-2026-7546), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.