Description
A NULL pointer dereference in the sub_41773C function of TOTOLINK N600R v4.3.0cu.7866_B20220506 allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request.
References (1)
Core 1
Core References
Exploit, Third Party Advisory
https://github.com/z472421519/BinaryAudit/blob/main/PoC/NPD/TOTOLink/sub_41773C/sub_41773C.md
Scores
CVSS v3
7.5
EPSS
0.0212
EPSS Percentile
84.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-476
Status
published
Products (1)
totolink/n600r_firmware
4.3.0cu.7866_b20220506
Published
Oct 22, 2025
Tracked Since
Feb 18, 2026