Buffer overflow in Totolink A3300r
CVE-2025-12258
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.
Vulnerability class: Buffer Overflow
EPSS: 0.009 (57.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Totolink A3300r — versions 17.0.0cu.557_B20221024
- Totolink A3300r_firmware — versions 17.0.0cu.557_b20221024
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- cna@vuldb.com (signature, Permissions Required, permissions-required)
- cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
- cna@vuldb.com (related, Exploit, Third Party Advisory)
- cna@vuldb.com (Product, product)
Frequently asked questions
- What is CVE-2025-12258?
- CVE-2025-12258 is a high-severity vulnerability in Totolink A3300r, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2025-10-27.
- How severe is CVE-2025-12258?
- High severity. CVSS v3 base score is 8.8 out of 10.