A security flaw has been discovered in TOTOLINK A800R 4.1.2cu.5137_B20200730. Affected is the function setWiFiWpsConfig of the file /cgi-bin/cstecgi.cgi of the component wps.so. The manipulation of the argument pin results in stack-based buffer overflow.
The attack can be launched remotely. The exploit has been released to the public and may be used for attacks.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 6
https://github.com/panda666-888/vuls/blob/main/totolink/a800r/setWiFiWpsConfig.…
cna@vuldb.com
https://vuldb.com/cve/CVE-2026-19847
cna@vuldb.com
https://vuldb.com/submit/869457
cna@vuldb.com
https://vuldb.com/vuln/389983
cna@vuldb.com
https://vuldb.com/vuln/389983/cti
cna@vuldb.com
https://www.totolink.net/
cna@vuldb.com