CVE-2025-12239
criticalA weakness has been identified in TOTOLINK A3300R 17.0.0cu.557_B20221024.
Vendor / product: Totolink — a3300r firmware
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
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2025-10-27 07:15
Modified: 2026-10-08 11:10
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 07:06 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
totolink / a3300r_firmware 17.0.0cu.557_b20221024
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDdnsCfg.md cna@vuldb.com
- https://vuldb.com/?ctiid.329909 cna@vuldb.com
- https://vuldb.com/?id.329909 cna@vuldb.com
- https://vuldb.com/?submit.673721 cna@vuldb.com
- https://www.totolink.net/ cna@vuldb.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:06 UTC · record ↗