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CWE

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CVE-2025-12239

Published: Oct 27, 2025

Modified: Oct 27, 2025

PUBLISHED

CVSS v3.1

8.8

HIGH

Description

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.

Vendor	Product	Versions
TOTOLINK	A3300R	affected `17.0.0cu.557_B20221024`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

VDB-329909 | TOTOLINK A3300R cstecgi.cgi setDdnsCfg buffer overflow

vdb-entry

technical-description

VDB-329909 | CTI Indicators (IOB, IOC, IOA)

signature

permissions-required

Submit #673721 | TOTOLINK A3300R V17.0.0cu.557_B20221024 Buffer Overflow

third-party-advisory

https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDdnsCfg.md

exploit

https://www.totolink.net/

product

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