CVE-2025-12259 HIGH

CVE-2025-12259: TOTOLINK A3300R POST Parameter cstecgi.cgi setScheduleCfg stack-based overflow

Vendor Totolink
Product A3300R
Weakness CWE-121
Published October 27, 2025
Last update February 24, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A flaw has been found in TOTOLINK A3300R 17.0.0cu.557_B20221024. The affected element is the function setScheduleCfg of the file /cgi-bin/cstecgi.cgi of the component POST Parameter Handler. This manipulation of the argument recHour causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been published and may be used.

Key dates

02Disclosure timeline

October 27, 2025 CVE published
February 24, 2026 Record updated