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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.

PUBLISHED Reserved 2026-03-29 | Published 2026-03-30 | Updated 2026-03-30 | Assigner VulDB




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Command Injection

Injection

Product status

17.0.0cu.557_b20221024
affected

Timeline

2026-03-29:Advisory disclosed
2026-03-29:VulDB entry created
2026-03-29:VulDB entry last update

Credits

LvHW (VulDB User) reporter

References

vuldb.com/vuln/354128 (VDB-354128 | Totolink A3300R cstecgi.cgi setUPnPCfg command injection) vdb-entry technical-description

vuldb.com/vuln/354128/cti (VDB-354128 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/779140 (Submit #779140 | Totolink A3300R 17.0.0cu.557_b20221024 Command Injection) third-party-advisory

github.com/...link_A3300R/tree/main/A3300R_enable_cmd_inject exploit

www.totolink.net/ product

cve.org (CVE-2026-5103)

nvd.nist.gov (CVE-2026-5103)

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