TI-2025-11242 Aliases CVE-2025-12259 GHSA-8gmh-6p83-rx7h

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

HIGH 71CWE-119Published 2025-10-27 · Updated 2026-02-24

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01024 63rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
TOTOLINK	A3300R	17.0.0cu.557_B20221024	—	No fix listed	CNA

A3300R VendorTOTOLINK Affected 17.0.0cu.557_B20221024 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:totolink:a3300r_firmware:17.0.0cu.557_b20221024:::::::*	17.0.0cu.557_b20221024	Vulnerable	TOTOLINK
cpe:2.3:h:totolink:a3300r:-:::::::*	not specified by NVD	Running on	TOTOLINK

cpe:2.3:o:totolink:a3300r_firmware:17.0.0cu.557_b20221024:*:*:*:*:*:*:* Versions 17.0.0cu.557_b20221024 Vulnerable ·TOTOLINK
cpe:2.3:h:totolink:a3300r:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-12259
2026-10-03 Alias added: GHSA-8gmh-6p83-rx7h

References

Exploit 1

https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setScheduleCfg.md

Other 1

https://www.totolink.net/

TI-2026-23871 An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing… CVSS 3.1CRITICAL 9.8
TI-2026-23869 An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing… CVSS 3.1CRITICAL 9.8
TI-2026-23868 An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing… CVSS 3.1CRITICAL 9.8
TI-2026-23866 An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing… CVSS 3.1CRITICAL 9.8
TI-2026-23861 An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing… CVSS 3.1CRITICAL 9.8
TI-2025-32465 Totolink A3300R V17.0.0cu.596_B20250515 was found to contain a command injection… CVSS 3.1CRITICAL 9.8

See all 63 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences