CVE-2026-5103

MEDIUM

Totolink A3300R cstecgi.cgi setUPnPCfg command injection

Title source: cna

Description

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 (5)

[Vdb Entry, Technical Description] https://vuldb.com/vuln/354128

[Signature, Permissions Required] https://vuldb.com/vuln/354128/cti

[Third Party Advisory] https://vuldb.com/submit/779140

[Exploit] https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_enable_cmd_inject

View Exploit ZIP pw:eip

[Product] https://www.totolink.net/

Scores

CVSS v3 6.3

EPSS 0.0216

EPSS Percentile 84.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-74 CWE-77

Status published

Products (2)

Totolink/A3300R 17.0.0cu.557_b20221024

totolink/a3300r_firmware 17.0.0cu.557_b20221024

Published Mar 30, 2026

Tracked Since Mar 30, 2026