CVE-2025-12239

A weakness has been identified in TOTOLINK A3300R 17.0.0cu.557_B20221024. The impacted element is the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi. Executing manipulation can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be exploited.

• CWE-119
• CWE-120
• CWE-120

• https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDdnsCfg.mdExploit, Third Party Advisory
• https://vuldb.com/?ctiid.329909Permissions Required, VDB Entry
• https://vuldb.com/?id.329909Third Party Advisory, VDB Entry
• https://vuldb.com/?submit.673721Third Party Advisory, VDB Entry
• https://www.totolink.net/Product

Published

Oct 27, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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