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.
References
Link Resource
https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDdnsCfg.md Exploit Third Party Advisory
https://vuldb.com/?ctiid.329909 Permissions Required VDB Entry
https://vuldb.com/?id.329909 Third Party Advisory VDB Entry
https://vuldb.com/?submit.673721 Third Party Advisory VDB Entry
https://www.totolink.net/ Product
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:totolink:a3300r_firmware:17.0.0cu.557_b20221024:*:*:*:*:*:*:*
cpe:2.3:h:totolink:a3300r:-:*:*:*:*:*:*:*

History

27 Oct 2025, 18:00

Type Values Removed Values Added
CPE cpe:2.3:h:totolink:a3300r:-:*:*:*:*:*:*:*
cpe:2.3:o:totolink:a3300r_firmware:17.0.0cu.557_b20221024:*:*:*:*:*:*:*
First Time Totolink
Totolink a3300r Firmware
Totolink a3300r
References () https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDdnsCfg.md - () https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDdnsCfg.md - Exploit, Third Party Advisory
References () https://vuldb.com/?ctiid.329909 - () https://vuldb.com/?ctiid.329909 - Permissions Required, VDB Entry
References () https://vuldb.com/?id.329909 - () https://vuldb.com/?id.329909 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.673721 - () https://vuldb.com/?submit.673721 - Third Party Advisory, VDB Entry
References () https://www.totolink.net/ - () https://www.totolink.net/ - Product

27 Oct 2025, 07:15

Type Values Removed Values Added
New CVE

Information

Published : 2025-10-27 07:15

Updated : 2025-10-27 18:00


NVD link : CVE-2025-12239

Mitre link : CVE-2025-12239

CVE.ORG link : CVE-2025-12239


JSON object : View

Products Affected

totolink

  • a3300r_firmware
  • a3300r
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')