Unrated severityNVD Advisory· Published Oct 27, 2025· Updated Oct 27, 2025

TOTOLINK A3300R cstecgi.cgi setDmzCfg buffer overflow

CVE-2025-12240

Description

A security vulnerability has been detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. This affects the function setDmzCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ip leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Totolink/A3300Rllm-fuzzy2 versions
= 17.0.0cu.557_B20221024+ 1 more
- (no CPE)range: = 17.0.0cu.557_B20221024
- (no CPE)range: 17.0.0cu.557_B20221024

Patches

Vulnerability mechanics

References

github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDmzCfg.mdmitreexploit
vuldb.commitrethird-party-advisory
vuldb.commitresignaturepermissions-required
vuldb.commitrevdb-entrytechnical-description
www.totolink.netmitreproduct

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