CVE-2025-12239 — HIGH (8.8)

Vulnerability 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.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Totolink	A3300R Firmware	17.0.0cu.557_b20221024
Totolink	A3300R	-

Related Weaknesses (CWE)

CWE-120 CWE-119

References

https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDdnsCfg.ExploitThird Party Advisory
https://vuldb.com/?ctiid.329909Permissions RequiredVDB Entry
https://vuldb.com/?id.329909Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.673721Third Party AdvisoryVDB Entry
https://www.totolink.net/Product

FAQ

What is CVE-2025-12239?

CVE-2025-12239 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 ov...

How severe is CVE-2025-12239?

CVE-2025-12239 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-12239?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink A3300R Firmware, Totolink A3300R.