CVE-2026-5103

Totolink A3300R cstecgi.cgi setUPnPCfg command injection

CVSS 5.3 MEDIUMEPSS 3.6%CWE-74 CWE-77

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.

CVSS: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

Affected products

Totolink · A3300R

public PoCs found — 1

cve_referencegithub.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_enable_cmd_injectunverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References

https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_enable_cmd_inject https://vuldb.com/submit/779140 https://vuldb.com/vuln/354128 https://vuldb.com/vuln/354128/cti https://www.totolink.net/