High 8.8Published Oct 27, 2025

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

Updated under an hour ago (Oct 27, 2026, 2:30 PM ET)

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It affects TOTOLINK A3300R. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for TOTOLINK A3300R

Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Weakness (CWE): CWE-121, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Analyzed
Record last updated: Feb 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

TOTOLINK A3300R totolink:a3300r_firmware	17.0.0cu.557_B20221024	CNA record
totolink a3300r_firmware totolink:a3300r_firmware	17.0.0cu.557_b20221024	NVD

References

References

https://vuldb.com/?id.329930	vdb-entry, technical-description, third-party-advisory
https://vuldb.com/?ctiid.329930	signature, permissions-required, vdb-entry
https://vuldb.com/?submit.673726	third-party-advisory, vdb-entry
https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setScheduleCfg.md	exploit, third-party-advisory
https://www.totolink.net/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.