BaseFortify

Publication date: 2025-11-13

Last updated on: 2026-07-05

Assigner: MITRE

Description

A stack buffer overflow vulnerability exists in the ToToLink LR1200GB (V9.1.0u.6619_B20230130) and NR1800X (V9.1.0u.6681_B20230703) Router firmware within the cstecgi.cgi binary (sub_42F32C function). The web interface reads the "lang" parameter and constructs Help URL strings using sprintf() into fixed-size stack buffers without proper length validation. Maliciously crafted input can overflow these buffers, potentially leading to arbitrary code execution or memory corruption, without requiring authentication.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-11-13

Last Modified

2026-07-05

Generated

2026-07-06

AI Q&A

2025-11-13

EPSS Evaluated

2026-07-05

NVD

CVE-2025-60684

EUVD

EUVD-2025-175305

Affected Vendors & Products

Vendor	Product	Version / Range
totolink	lr1200gb_firmware	9.1.0u.6619_b20230130
totolink	lr1200gb	*
totolink	nr1800x_firmware	9.1.0u.6681_b20230703
totolink	nr1800x	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-121	A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

Executive Summary

This vulnerability is a stack buffer overflow in the ToToLink LR1200GB and NR1800X router firmware. It occurs in the cstecgi.cgi binary when the web interface processes the "lang" parameter. The parameter is used to build Help URL strings with sprintf() into fixed-size stack buffers without proper length checks. Malicious input can overflow these buffers, potentially causing arbitrary code execution or memory corruption without needing authentication.

Impact Analysis

The vulnerability can allow an attacker to execute arbitrary code or cause memory corruption on the affected router devices. This can lead to unauthorized control over the device, disruption of network services, or further compromise of the network connected to the router.

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