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.
References (3)
Core 3
Core References
Broken Link
http://totolink.com
Exploit, Third Party Advisory
https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-LR1200GB/CVE-2025-60684.md
Product
https://www.totolink.net/
Scores
CVSS v3
6.5
EPSS
0.0029
EPSS Percentile
52.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-121
Status
published
Products (2)
totolink/lr1200gb_firmware
9.1.0u.6619_b20230130
totolink/nr1800x_firmware
9.1.0u.6681_b20230703
Published
Nov 13, 2025
Tracked Since
Feb 18, 2026