Vulnerability · Published Oct 27, 2025 · Assigned by VulDB
CVE-2025-12258TOTOLINK A3300R POST Parameter cstecgi.cg setOpModeCfg stack-based overflow
High 8.8
In plain English
A high-severity stack buffer overflow in A3300R from TOTOLINK. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.0%top 36.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A vulnerability was detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. Impacted is the function setOpModeCfg of the file /cgi-bin/cstecgi.cg of the component POST Parameter Handler. The manipulation of the argument opmode results in stack-based buffer overflow. The attack may be performed from remote.
Affected products (as reported)
Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R
References
- VDB-329929 | TOTOLINK A3300R POST Parameter cstecgi.cg setOpModeCfg stack-based overflow vdb-entry, technical-description
- VDB-329929 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #673725 | TOTOLINK A3300R V17.0.0cu.557_B20221024 Buffer Overflow third-party-advisory
- https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setOpModeCfg.md related
- https://www.totolink.net/ product