CVE-2026-5101

A vulnerability was identified in Totolink A3300R 17.0.0cu.557_b20221024. This affects the function setLanCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument lanIp leads to command injection. Remote exploitation of the attack is possible. The exploit is publicly available and might be used.
References
Link Resource
https://github.com/Litengzheng/vul_db/blob/main/A3300R/vul_39/README.md Exploit Third Party Advisory
https://vuldb.com/submit/779128 VDB Entry Third Party Advisory
https://vuldb.com/vuln/354126 Third Party Advisory VDB Entry
https://vuldb.com/vuln/354126/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

30 Mar 2026, 15:45

Type Values Removed Values Added
References () https://github.com/Litengzheng/vul_db/blob/main/A3300R/vul_39/README.md - () https://github.com/Litengzheng/vul_db/blob/main/A3300R/vul_39/README.md - Exploit, Third Party Advisory
References () https://vuldb.com/submit/779128 - () https://vuldb.com/submit/779128 - VDB Entry, Third Party Advisory
References () https://vuldb.com/vuln/354126 - () https://vuldb.com/vuln/354126 - Third Party Advisory, VDB Entry
References () https://vuldb.com/vuln/354126/cti - () https://vuldb.com/vuln/354126/cti - Third Party Advisory, VDB Entry
References () https://www.totolink.net/ - () https://www.totolink.net/ - Product
First Time Totolink
Totolink a3300r
Totolink a3300r Firmware
CWE CWE-78
CPE cpe:2.3:h:totolink:a3300r:-:*:*:*:*:*:*:*
cpe:2.3:o:totolink:a3300r_firmware:17.0.0cu.557_b20221024:*:*:*:*:*:*:*

Information

Published : 2026-03-29 23:16

Updated : 2026-03-30 15:45


NVD link : CVE-2026-5101

Mitre link : CVE-2026-5101

CVE.ORG link : CVE-2026-5101


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')

CWE-78

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