CVE-2026-5103

MEDIUM

Totolink A3300R cstecgi.cgi setUPnPCfg command injection

Title source: cna
STIX 2.1

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)

Core 5
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-354128 | Totolink A3300R cstecgi.cgi setUPnPCfg command injection
https://vuldb.com/vuln/354128
Signature, Permissions Required signature permissions-required
VDB-354128 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/354128/cti
Third Party Advisory third-party-advisory
Submit #779140 | Totolink A3300R 17.0.0cu.557_b20221024 Command Injection
https://vuldb.com/submit/779140
Product product
https://www.totolink.net/

Scores

CVSS v3 6.3
EPSS 0.0364
EPSS Percentile 88.1%
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