CVE-2025-12259

HIGH 8.8

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

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-121 CWE-119
Vendor	totolink
Product	a3300r
Published	Oct 27, 2025
Last Updated	Feb 24, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

TOTOLINK / A3300R

17.0.0cu.557_B20221024

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.329930 vuldb.com: https://vuldb.com/?ctiid.329930 vuldb.com: https://vuldb.com/?submit.673726 github.com: https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setScheduleCfg.md totolink.net: https://www.totolink.net/

Credits

🔍 yhryhryhr_ (VulDB User)