CVE-2026-5103

A weakness has been identified in Totolink A3300R 17.0.0cu.557_b20221024. This issue affects the function setUPnPCfg of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument enable causes command injection. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.
References
Link Resource
https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_enable_cmd_inject Exploit Third Party Advisory
https://vuldb.com/submit/779140 Permissions Required VDB Entry
https://vuldb.com/vuln/354128 Third Party Advisory VDB Entry
https://vuldb.com/vuln/354128/cti Third Party Advisory VDB Entry
https://www.totolink.net/ Product
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:totolink:a3300r_firmware:17.0.0cu.557_b20221024:*:*:*:*:*:*:*
cpe:2.3:h:totolink:a3300r:-:*:*:*:*:*:*:*

History

29 Apr 2026, 01:00

Type Values Removed Values Added
Summary
  • (es) Se ha identificado una debilidad en Totolink A3300R 17.0.0cu.557_b20221024. Este problema afecta a la función setUPnPCfg del archivo /cgi-bin/cstecgi.cgi. Esta manipulación del argumento enable provoca inyección de comandos. El ataque puede llevarse a cabo de forma remota. El exploit se ha hecho público y podría utilizarse para ataques.

30 Mar 2026, 15:42

Type Values Removed Values Added
References () https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_enable_cmd_inject - () https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_enable_cmd_inject - Exploit, Third Party Advisory
References () https://vuldb.com/submit/779140 - () https://vuldb.com/submit/779140 - Permissions Required, VDB Entry
References () https://vuldb.com/vuln/354128 - () https://vuldb.com/vuln/354128 - Third Party Advisory, VDB Entry
References () https://vuldb.com/vuln/354128/cti - () https://vuldb.com/vuln/354128/cti - Third Party Advisory, VDB Entry
References () https://www.totolink.net/ - () https://www.totolink.net/ - Product
CPE cpe:2.3:o:totolink:a3300r_firmware:17.0.0cu.557_b20221024:*:*:*:*:*:*:*
cpe:2.3:h:totolink:a3300r:-:*:*:*:*:*:*:*
First Time Totolink a3300r
Totolink a3300r Firmware
Totolink

30 Mar 2026, 02:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-03-30 02:16

Updated : 2026-04-29 01:00


NVD link : CVE-2026-5103

Mitre link : CVE-2026-5103

CVE.ORG link : CVE-2026-5103


JSON object : View

Products Affected

totolink

  • a3300r
  • a3300r_firmware
CWE
CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')