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CVSS 9.8 · CRITICAL

CVE-2026-7546

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.

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Análisis

This is a stack-based buffer overflow vulnerability affecting the firmware of a specific Totolink router model. While the severity is critical and an exploit is public, this is vendor-specific IoT hardware that does not impact the community's core focus on web, mobile, or backend software development stacks.

Severidad

Puntaje: 9.8(CRITICAL)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV: NETWORK
AC: LOW
PR: NONE
UI: NONE
S: UNCHANGED
C: HIGH
I: HIGH
A: HIGH
Tipo de falla (CWE): CWE-119CWE-121

EPSS

Probabilidad de explotación (próx. 30 días): 0.0008 (0.1%)
Percentil: 22.7%
EPSS: 2026-05-06

Descripción técnica

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.

Publicada: 1/5/2026, 3:16:01
Última modificación: 1/5/2026, 15:26:24

Referencias

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